Display apparatus and display method

A display apparatus includes a display panel configured to output light for displaying a mixed image including a first image and a second image, and a filter device disposed at a light exit side of the display panel and including a first filter lens and a second filter lens, orthographic projections of the first and second filter lenses on a light-emitting surface of the display panel do not overlap, and wavelength ranges of light that the first filter lens allows to transmit do not overlap with wavelength ranges of light that the second filter lens allows to transmit. Wavelength ranges of light for displaying the first image are within the wavelength ranges of the light that the first filter lens allows to transmit, and wavelength ranges of light for displaying the second image are within the wavelength ranges of the light that the second filter lens allows to transmit.

CROSS-REFERENCE TO RELATED APPLICATION

This application claims priority to Chinese Patent Application No. 201810368736.2, filed with the Chinese Patent Office on Apr. 23, 2018, titled “DISPLAY APPARATUS AND DISPLAY METHOD”, which is incorporated herein by reference in its entirety.

TECHNICAL FIELD

The present disclosure relates to the field of stereoscopic display technologies, and in particular, to a display apparatus and a display method.

BACKGROUND

Virtual Reality (abbreviated as VR) technology is a computer simulation technology through which a virtual world can be created and experienced. The VR technology uses a computer to generate an interactive three-dimensional dynamic view, and a simulation system of a product using the VR technology can immerse users in an environment of the three-dimensional dynamic view, and the VR technology has characteristics of multi-perception, presence, interactivity and autonomy.

SUMMARY

In an aspect, a display apparatus is provided. The display apparatus includes a display panel configured to output light for displaying a mixed image including a first image and a second image, and a filter device disposed at a light exit side of the display panel. The filter device includes a first filter lens and a second filter lens, an orthographic projection of the first filter lens on a light-emitting surface of the display panel does not overlap with an orthographic projection of the second filter lens on the light-emitting surface of the display panel, and wavelength ranges of light that the first filter lens allows to transmit do not overlap with wavelength ranges of light that the second filter lens allows to transmit. Wavelength ranges of light for displaying the first image are within the wavelength ranges of the light that the first filter lens allows to transmit, and wavelength ranges of light for displaying the second image are within the wavelength ranges of the light that the second filter lens allows to transmit.

In some embodiments, the display panel includes a plurality of first pixels configured to output the light for displaying the first image, and a plurality of second pixels configured to output the light for displaying the second image.

In some embodiments, the wavelength ranges of the light for displaying the first image include wavelength ranges of light of a plurality of colors. Each first pixel includes a plurality of first sub-pixels, and the plurality of first sub-pixels are configured to output light, wavelength ranges of which are the same as the wavelength ranges of the light of the plurality of colors included in the wavelength ranges of the light for displaying the first image in one-to-one correspondence. The wavelength ranges of the light for displaying the second image include wavelength ranges of light of a plurality of colors. Each second pixel includes a plurality of second sub-pixels, and the plurality of second sub-pixels are configured to output light, wavelength ranges of which are the same as the wavelength ranges of the light of the plurality of colors included in the wavelength ranges of the light for displaying the second image in one-to-one correspondence.

In some embodiments, the wavelength ranges of the light for displaying the first image include a wavelength range of first red light, a wavelength range of first green light and a wavelength range of first blue light. Each first pixel includes a first red sub-pixel, a first green sub-pixel and a first blue sub-pixel. The first red sub-pixel is configured to output light, a wavelength range of which is the wavelength range of the first red light. The first green sub-pixel is configured to output light, a wavelength range of which is the wavelength range of the first green light. The first blue sub-pixel is configured to output light, a wavelength range of which is the wavelength range of the first blue light. The wavelength ranges of the light for displaying the second image include a wavelength range of second red light, a wavelength range of second green light and a wavelength range of second blue light. Each second pixel includes a second red sub-pixel, a second green sub-pixel and a second blue sub-pixel. The second red sub-pixel is configured to output light, a wavelength range of which is the wavelength range of the second red light. The second green sub-pixel is configured to output light, a wavelength range of which is the wavelength range of the second green light. The second blue sub-pixel is configured to output light, a wavelength range of which is the wavelength range of the second blue light.

In some embodiments, each first pixel includes a plurality of first filter portions, and each second pixel includes a plurality of second filter portions. A wavelength range of light that each first filter portion allows to transmit is within the wavelength ranges of the light that the first filter lens allows to transmit, and a wavelength range of light that each second filter portion allows to transmit is within the wavelength ranges of the light that the second filter lens allows to transmit.

In some embodiments, each first pixel includes a plurality of first light-emitting devices, and each second pixel includes a plurality of second light-emitting devices. Each first light-emitting device is configured to emit light, a wavelength range of which is within the wavelength ranges of the light that the first filter lens allows to transmit. Each second light-emitting device is configured to emit light, a wavelength range of which is within the wavelength ranges of the light that the second filter lens allows to transmit.

In some embodiments, the plurality of first pixels and the plurality of second pixels are alternately arranged in a row direction of arranging the first and second pixels, and one of the second pixels is disposed between each adjacent two first pixels.

In some embodiments, the first filter lens includes a first lens and a first filter layer disposed on a surface of the first lens, and the first filter layer includes a plurality of first filter units. The second filter lens includes a second lens and a second filter layer disposed on a surface of the second lens, and the second filter layer includes a plurality of second filter units. Wavelength ranges of light that the plurality of first filter units allow to transmit do not overlap with wavelength ranges of light that the plurality of second filter units allow to transmit. The wavelength ranges of the light for displaying the first image are within the wavelength ranges of the light that the plurality of first filter units allow to transmit, and the wavelength ranges of the light for displaying the second image are within the wavelength ranges of the light that the plurality of second filter units allow to transmit.

In some embodiments, the wavelength ranges of the light for displaying the first image include wavelength ranges of light of a plurality of colors. Each first filter unit includes a plurality of first sub-filter units, and the wavelength ranges of the light of the plurality of colors included in the wavelength ranges of the light for displaying the first image are within wavelength ranges of light that the plurality of first sub-filter units allow to transmit in one-to-one correspondence. The wavelength ranges of the light for displaying the second image include wavelength ranges of light of a plurality of colors. Each second filter unit includes a plurality of second sub-filter units, and the wavelength ranges of the light of the plurality of colors included in the wavelength ranges of the light for displaying the second image are within wavelength ranges of light that the plurality of second sub-filter units allow to transmit in one-to-one correspondence.

In some embodiments, the wavelength ranges of the light for displaying the first image include a wavelength range of first red light, a wavelength range of first green light and a wavelength range of first blue light. Each first filter unit includes a first red sub-filter unit, a first green sub-filter unit and a first blue sub-filter unit. The wavelength range of the first red light is within a wavelength range of light that the first red sub-filter unit allows to transmit, the wavelength range of the first green light is within a wavelength range of light that the first green sub-filter unit allows to transmit, and the wavelength range of the first blue light is within a wavelength range of light that the first blue sub-filter unit allows to transmit. The wavelength ranges of the light for displaying the second image include a wavelength range of second red light, a wavelength range of second green light and a wavelength range of second blue light. Each second filter unit includes a second red sub-filter unit, a second green sub-filter unit and a second blue sub-filter unit. The wavelength range of the second red light is within a wavelength range of light that the second red sub-filter unit allows to transmit, the wavelength range of the second green light is within a wavelength range of light that the second green sub-filter unit allows to transmit, and the wavelength range of the second blue light is within a wavelength range of light that the second blue sub-filter unit allows to transmit.

In some embodiments, the first filter layer and the second filter layer include interference filter films respectively.

In some embodiments, the first filter layer is disposed on a surface of the first lens away from the display panel, and the second filter layer is disposed on a surface of the second lens away from the display panel. Alternatively, the first filter layer is disposed on a surface of the first lens close to the display panel, and the second filter layer is disposed on a surface of the second lens close to the display panel.

In some embodiments, a distance between the light-emitting surface of the display panel and a first cross-section of the first filter lens in a direction perpendicular to the light-emitting surface is smaller than a focal length of the first filter lens, and the first cross-section passes through an optical center of the first filter lens and is parallel to the light-emitting surface of the display panel. A distance between the light-emitting surface of the display panel and a second cross-section of the second filter lens in the direction perpendicular to the light-emitting surface is smaller than a focal length of the second filter lens, and the second cross-section passes through an optical center of the second filter lens and is parallel to the light-emitting surface of the display panel.

In another aspect, a display method is provided, and the display method is applied to the display apparatus described above. The display method includes: outputting, by the display panel of the display apparatus, light for displaying the mixed image including the first image and the second image; filtering, by the first filter lens of the display apparatus, light for displaying the mixed image, so that the light for displaying the first image included in the mixed image transmits the first filter lens; and filtering, by the second filter lens of the display apparatus, the light for displaying the mixed image, so that the light for displaying the second image included in the mixed image transmits the second filter lens.

In yet another aspect, a non-transitory computer-readable storage medium is provided. The non-transitory computer-readable storage medium stores executable instructions that, when executed by a display apparatus, cause the display apparatus to perform the display method.

DETAILED DESCRIPTION

With reference toFIGS. 1-3, some embodiments of the present disclosure provide a display apparatus100, and the display apparatus100includes a display panel1and a filter device2disposed at a light exit side of the display panel1. The filter device2includes a first filter lens21and a second filter lens22. An orthographic projection of the first filter lens21on a light-emitting surface a of the display panel1does not overlap with an orthographic projection of the second filter lens22on the light-emitting surface a of the display panel1. For example, the first filter lens21and the second filter lens22are arranged side by side at the light exit side of the display panel1, the first filter lens21corresponds to a left eye L of a user, and the second filter lens22corresponds to a right eye R of the user. Wavelength ranges of light that the first filter lens21allows to transmit do not overlap with wavelength ranges of light that the second filter lens22allows to transmit.

The display panel1is configured to output light for displaying a mixed image S, and the mixed image S includes a first image S1and a second image S2. Wavelength ranges of light for displaying the first image S1are within the wavelength ranges of the light that the first filter lens21allows to transmit, and wavelength ranges of light for displaying the second image S2are within the wavelength ranges of the light that the second filter lens22allows to transmit.

With continued reference toFIGS. 2 and 3again, a display process of the display apparatus100is as follows. The display panel1outputs the light for displaying the mixed image S including the first image S1and the second image S2. The first filter lens21filters light C for displaying the mixed image, and light P1for displaying the first image S1included in the mixed image S transmits the first filter lens21. The second filter lens22filters the light C for displaying the mixed image S, and light P2for displaying the second image S2included in the mixed image S transmits the second filter lens22.

Since the left eye L of the user corresponds to the first filter lens21and the right eye R of the user corresponds to the second filter lens22, the light P1for displaying the first image S1enters the left eye L to serve as the light for displaying a left-eye image, and the light P2for displaying the second image S2enters the right eye R to serve as the light for displaying a right-eye image. In this way, it may be ensured that the first image S1(i.e., the left-eye image) and the second image S2(i.e., the right-eye image) are synthesized in the user's brain, thereby a stereoscopic image is observed.

It can be seen from the structure of the display apparatus100described above and the display process thereof that as shown inFIG. 3, when the first filter lens21and the second filter lens22receive the light C for displaying the mixed image S, the light P1for displaying the first image S1may transmit the first filter lens21, the light P2for displaying the second image S2is unable to transmit the first filter lens21, the light P2for displaying the second image S2may transmit the second filter lens22, and the light P1for displaying the first image S1is unable to transmit the second filter lens22.

As a result, the light C for displaying the mixed image S may be divided into two independent light beams, i.e., the light P1for displaying the first image S1and the light P2for displaying the second image S2, respectively, and one of the two light beams enters the left eye L of the user, and another light beam enters the right eye R of the user. Since the left eye L of the user corresponds to the first filter lens21and the right eye R corresponds to the second filter lens22, the light P1for displaying the first image S1enters the left eye L, and the light P2for displaying the second image S2enters the right eye R. The light P1for displaying the first image S1and the light P2for displaying the second image S2are reconstructed in the user's brain to generate a stereoscopic image.

It can be seen that the display apparatus100provided by some embodiments of the present disclosure can separate the light for displaying the mixed image S to form two light beams P1and P2that are independent of each other and do not interfere with each other to generate a stereoscopic image, so that there is no need to use two display screens in the display apparatus to display the left-eye image and the right-eye image, respectively, thereby avoiding providing a light barrier between the two display screens of the display apparatus, which is advantageous for simplifying the structure of the display apparatus and reducing a weight of the display apparatus.

Moreover, in the display apparatus provided by some embodiments of the present disclosure, since there is no occlusion of the light barrier, and thus a field of view between lines respectively connected edges of the display apparatus to an observation point is increased, the left eye L and the right eye R of the user can see the first image S1(i.e., the left-eye image) and the second image S2(i.e., the right-eye image) at a larger field of view, so that when the user's brain constructs the stereoscopic image, the first image S1and the second image S2have a higher degree of complementarity, thereby a stereoscopic image having a good stereoscopic effect may be constructed, so as to effectively improve a sense of immersion of the user when using the display apparatus100.

In addition, in the related art, a VR display apparatus uses two screens to display the left-eye image and the right-eye image, respectively, and the two screens are required to be strictly aligned. For example, display surfaces of the two screens are required to be in a same plane, and the two screens are arranged in an axisymmetric manner, etc. In this way, it may be ensured that the stereoscopic image formed in the brain has a strong stereoscopic effect after the left-eye image and the right-eye image displayed on the two screens enter the user's eyes. However, the strict alignment of the two screens makes the fabrication precision and the installation precision of the VR display apparatus relatively high, and it is easy to increase the fabrication difficulty and the installation difficulty of the VR display apparatus.

The display apparatus100provided by some embodiments of the present disclosure provides the mixed image S including the first image S1and the second image S2by using the display panel1, then the first filter lens21and the second filter lens22of the filter device2are used for filtering the light C for displaying the mixed image, so that the light P1for displaying the first image S1enters the left eye L, and the light P2for displaying the second image S2enters the right eye R. That is, the display apparatus100provided by the embodiments of the present disclosure uses one display panel1, and there is no need to use two screens (i.e., two display panels). Therefore, there is no problem that the two screens are strictly aligned, thereby reducing the fabrication difficulty and the installation difficulty of the display apparatus.

With reference toFIG. 1again, in some embodiments, a distance d1between the light-emitting surface a of the display panel1and a first cross-section b1(the first cross-section b1passes through an optical center of the first filter lens21and is parallel to the light-emitting surface a of the display panel1) of the first filter lens21in a direction perpendicular to the light-emitting surface a of the display panel1is smaller than a focal length of the first filter lens21, and a distance d2between the light-emitting surface a of the display panel1and a second cross-section b2(the second cross-section b2passes through the optical center of the second filter lens22and is parallel to the light-emitting surface a of the display panel1) of the second filter lens22in the direction perpendicular to the the light-emitting surface a of the display panel1is smaller than a focal length of the second filter lens22.

With reference toFIG. 2again, since the display apparatus100can provide the mixed image S including the first image S1and the second image S2by using one display panel1, the left eye L and the right eye R of the user are not occluded by the light barrier, thereby ensuring that the sight of the user covers the entire display panel1. As a result, in a case where the distance d1between the light-emitting surface a of the display panel1and the first cross-section b1of the first filter lens21in the direction perpendicular to the light-emitting surface a is smaller than the focal length of the first filter lens21and the distance d2between the light-emitting surface a of the display panel1and the second cross-section b2of the second filter lens22in the direction perpendicular to the light-emitting surface a is smaller than the focal length of the second filter lens22, the image seen by the left eye L and right eye R of the user is a virtual image3, in which the left eye L sees a left-eye virtual image that enlarges the first image and has a depth of field, and the right eye R sees a right-eye virtual image that enlarges the second image and has a depth of field, which makes the stereoscopic image (i.e., the virtual image3) constructed by the user's brain relatively clear and real.

In some embodiments, the display apparatus100have a structure in which the display panel1and the filter device2are integrated. For example, the display apparatus100is a VR head-mounted display apparatus. In some other embodiments, the display apparatus100have a structure in which the display panel1is separated from the filter device2. For example, the display panel1is any product or component having a display function such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame or a navigator, and the filter device2is provided as a portable eyeglass to the user to assist the user in viewing the image provided by the display panel1.

In some embodiments, the first filter lens21and the second filter lens22included in the filter device2described above are connected by a connector, such as a frame. In some other embodiments, the first filter lens21and the second filter lens22included in the filter device2described above are fixed by a lens barrel. Since there is only one screen (i.e., the display panel1) in the display apparatus100, the lens barrel is not required to be extended to a middle of the display panel1as a light barrier.

The structure of the display panel1in the display apparatus100provided by some embodiments of the present disclosure will be illustratively described below.

As shown inFIG. 4, in some embodiments, the display panel1includes a plurality of first pixels GLand a plurality of second pixels GR. The plurality of first pixels GLare configured to provide the first image S1, and the plurality of second pixels GRare configured to provide the second image S2. With continued reference toFIG. 4, In some examples, the plurality of first pixels GLand the plurality of second pixels GRare arranged in an array. A row direction in which pixels are arranged is an OX direction, and a column direction is an OY direction. The plurality of first pixels GLand the plurality of second pixels GRare alternately arranged in the row direction, i.e., the OX direction, and the plurality of first pixels GLare arranged in a column or the plurality of second pixels GRare arranged in a column in the column direction, i.e., the OY direction.

With continued reference toFIG. 4, in some embodiments, the wavelength ranges of the light for displaying the first image S1include wavelength ranges of light of a plurality of colors. Correspondingly, each first pixel GLincludes a plurality of first sub-pixels gL, and wavelength ranges of light emitted from the plurality of first sub-pixels gLare the same as the wavelength ranges of the light of the plurality of colors in one-to-one correspondence. The wavelength ranges of the light for displaying the second image S2include wavelength ranges of the light of a plurality of colors. Correspondingly, each second pixel GRincludes a plurality of second sub-pixels gR, and the wavelength ranges of light emitted from the plurality of second sub-pixels gRare the same as the wavelength ranges of the light of the plurality of colors included in the wavelength ranges of the light for displaying the second image S2in one-to-one correspondence.

In this way, a display of the first image S1may be achieved by using first sub-pixels gLRincluded in the display panel1for providing the light of the plurality of colors, and a display of the second image S2may be achieved by using second sub-pixels gRincluded in the display panel1for providing the light of the plurality of colors, thereby achieving the color display of the first image S1and the second image S2, i.e., the color display of the display apparatus.

The wavelength ranges of the light for displaying the first image S1are within the wavelength ranges of the light that the first filter lens21allows to transmit, the wavelength ranges of the light for displaying the second image S2are within the wavelength ranges of the light that the second filter lens22allows to transmit, and the wavelength ranges of the light that the first filter lens21allows to transmit do not overlap with the wavelength ranges of the light that the second filter lens22allows to transmit. That is to say, any one of the wavelength ranges of the light of the plurality of colors for displaying the first image S1does not overlap with any one of the wavelength ranges of the light of the plurality of colors for displaying the second image S2. That is to say, any one of the wavelength ranges of the light provided by the plurality of first sub-pixels gLincluded in each first pixel GLdoes not overlap with any one of the wavelength ranges of the light provided by the plurality of second sub-pixels gRincluded in each second pixel GR, thereby ensuring that the light for displaying the first image S1and the light for displaying the second image S2may independently enter the left eye L and the right eye R of the user, respectively.

In some embodiments, with reference toFIGS. 4 and 5, the wavelength ranges of the light for displaying the first image S1include a wavelength range of first red light, a wavelength range of first green light and a wavelength range of first blue light. Each first pixel GLincludes a first red sub-pixel gLR, a first green sub-pixel gLGand a first blue sub-pixel gLB. The first red sub-pixel gLRis configured to output light, a wavelength range of which is the wavelength range of the first red light. The first green sub-pixel gLGis configured to output light, a wavelength range of which is the wavelength range of the first green light. The first blue sub-pixel gLBis configured to output light, a wavelength range of which is the wavelength range of the first blue light.

The wavelength ranges of the light for displaying the second image S2include a wavelength range of second red light, a wavelength range of second green light and a wavelength range of second blue light. Each second pixel GRincludes a second red sub-pixel gRR, a second green sub-pixel gRGand a second blue sub-pixel gRB. The second red sub-pixel gRRis configured to output light, a wavelength range of which is the wavelength range of the second red light. The second green sub-pixel gRGis configured to output light, a wavelength range of which is the wavelength range of the second green light. The second blue sub-pixel gRBis configured to output light, a wavelength range of which is the wavelength range of the second blue light.

In this way, the first image S1is displayed by using the first red sub-pixel gLR, the first green sub-pixel gLGand the first blue sub-pixel gLBincluded in each first pixel GLfor providing the red, green and blue light, respectively, and the second image S2is displayed by using the second red sub-pixel gRR, the second green sub-pixel gRGand the second blue sub-pixel gRBincluded in each second pixel GRfor providing the red, green and blue light, respectively, thereby achieve a full color display of the first image S1and the second image S2.

With reference toFIG. 5, the wavelength range of the first red light and the wavelength range of the second red light are selected from a wavelength range of red light in a wavelength range of visible light (400-800 nm). That is, the wavelength range of the light provided by the first red sub-pixel gLRand the wavelength range of the light provided by the second red sub-pixel gRRare selected from the wavelength range of the red light, and do not overlap. The wavelength range of the first green light and the wavelength range of the second green light are selected from a wavelength range of green light in the wavelength range of the visible light (400-800 nm). That is, the wavelength range of the light provided by the first green sub-pixel gLGand the wavelength range of the light provided by the second green sub-pixel gRGare selected from the wavelength range of the green light, and do not overlap. The wavelength range of the first blue light and the wavelength range of the second blue light are selected from a wavelength range of blue light in the wavelength range of the visible light (400-800 nm). That is, the wavelength range of the light provided by the first blue sub-pixel gLBand the wavelength range of the light provided by the second blue sub-pixel gRBare selected from the wavelength range of the blue light, and do not overlap. In this way, it may be ensured that the light for displaying the first image S1and the light for displaying the second image S2may independently enter the left eye L and the right eye R of the user, respectively.

In some embodiments, with reference toFIGS. 6 and 7, the display panel1is a liquid crystal display (LCD) panel, and the LCD panel includes a color film substrate11and an array substrate12that are disposed opposite to each other. The color film substrate11includes a base substrate and a color filer layer disposed on a surface of the base substrate close to the array substrate12. The color filter layer includes a plurality of filter portions, and the plurality of filter portions filter the light transmitting the array substrate12, respectively, so that the wavelength ranges of the light provided by the plurality of first pixels GLin the display panel1and for displaying the first image S1are within the wavelength ranges of the light that the first filter lens21allows to transmit, and the wavelength ranges of the light provided by the plurality of second pixels GRin the display panel1and for displaying the second image S2are within the wavelength ranges of the light that the second filter lens22allows to transmit.

In some embodiments, with reference toFIGS. 6 and 7again, each first pixel GLincludes a plurality of first filter portions11L, and each second pixel GRincludes a plurality of second filter portions11R. A wavelength range of light that each first filter portion11L allows to transmit is within the wavelength ranges of the light that the first filter lens21allows to transmit, and a wavelength range of light that each second filter portion11R allows to transmit is within the wavelength ranges of the light that the second filter lens22allows to transmit, thereby ensuring that the light for displaying the first image S1and the light for displaying the second image S2may independently enter the left eye L and the right eye R of the user, respectively, thereby achieving the display of the mixed image S including the first image S1and the second image S2by the display panel1.

In some embodiments, each first pixel GLincludes a plurality of first sub-pixels gL, and the plurality of first filter portions11L are arranged in one-to-one correspondence with the plurality of first sub-pixels gL, that is, each first sub-pixel gLincludes a first filter portion11L. Similarly, each second pixel GRincludes a plurality of second sub-pixels gR, and the plurality of second filter portions11R are arranged in one-to-one correspondence with the plurality of second sub-pixels gR, that is, each second sub-pixel gRincludes a second filter portion11R. The wavelength range of the light that each first filter portion11L allows to transmit is the same as the wavelength range of the light required to be provided by a corresponding first sub-pixel gLto which the first filter portion11L belongs, and the wavelength range of the light that each second filter portion11R allows to transmit is the same as the wavelength range of the light required to be provided by a corresponding second sub-pixel gRto which the second filter portion11R belongs, so that each first sub-pixel gLand each second sub-pixel gRmay provide the light that satisfies respective required wavelength ranges.

For example, each first pixel GLincludes a first red sub-pixel gLR, a first green sub-pixel gLGand a first blue sub-pixel gLB. The wavelength range of the light required to be provided by the first red sub-pixel gLRis the wavelength range of the first red light, the wavelength range of the light required to be provided by the first green sub-pixel gLGis the wavelength range of the first green light, and the wavelength range of the light required to be provided by the first blue sub-pixel gLBis the wavelength range of the first blue light. The first red sub-pixel gLRincludes a first red filter portion, and the wavelength range of light that the first red filter portion allows to transmit is the wavelength range of the first red light. The first green sub-pixel gLGincludes a first green filter portion, and the wavelength range of light that the first green filter portion allows to transmit is the wavelength range of the first green light. The first blue sub-pixel gLBincludes a first blue filter portion, and the wavelength range of light that the first blue filter portion allows to transmit is the wavelength range of the first blue light.

Similarly, each second pixel GRincludes a second red sub-pixel gRR, a second green sub-pixel gRGand a second blue sub-pixel gRB. The wavelength range of the light required to be provided by the second red sub-pixel gRRis the wavelength range of the second red light, the wavelength range of the light required to be provided by the second green sub-pixel gRGis the wavelength range of the second green light, and the wavelength range of the light required to be provided by the second blue sub-pixel gRBis the wavelength range of the second blue light. The second red sub-pixel gRRincludes a second red filter portion, and the wavelength range of light that the second red filter portion allows to transmit is the wavelength range of the second red light. The second green sub-pixel gRGincludes a second green filter portion, and the wavelength range of light that the second green filter portion allows to transmit is the wavelength range of the second green light. The second blue sub-pixel gRBincludes a second blue filter portion, and the wavelength range of light that the second blue filter portion allows to transmit is the wavelength range of the second blue light.

In some embodiments, areas of each first filter portion11L and each second filter portion11R are configured to be relatively small, so that a matching between the first image S1and the second image S2may be improved, and a fineness and the stereoscopic effect of the stereoscopic image formed by the first image S1and the second image S2may be improved. For example, the area of each first filter portion11L is an area of one first sub-pixel gLor an area of one column of the first sub-pixels gL, and the area of each second filter portion11R is an area of one second sub-pixel gRor an area of one column of the second sub-pixels gR, thereby well improving the fineness and stereoscopic effect of the stereoscopic image.

It will be noted that during an operation of the display panel1, a display signal received by the display panel1is a display signal of an initial image, that is, the display panel1is configured to convert the initial image into the mixed image S including the first image S1and the second image S2and display the mixed image S. For example, the initial image is a gray scale image. When light for displaying the initial image transmits the color film substrate11of the display panel1, each first filter portion11L in the color film substrate11filters the light for displaying the initial image, and only allows the light for displaying the first image S1to transmit to form the first image S1. In addition, each second filter portion11R in the color film substrate11filters the light for displaying the initial image, and only allows the light for displaying the second image S2to transmit to form the second image S2. Then the light for displaying the initial image may be combined and the display panel1provides the mixed image S composed of the first image S1and the second image S2.

On this basis, in some embodiments, in a case where the wavelength range of the light that each first filter portion11L allows to transmit and the wavelength range of the light that each second filter portion11R allows to transmit are set, the wavelength ranges of the light for displaying the initial image are within the wavelength ranges of the light that the first filter portions11L allow to transmit and the wavelength ranges of the light that the second filter portions11R allow to transmit, so that the light for displaying the initial image transmits the first filter portions11L and the second filter portions11R as much as possible, thereby reducing a light loss, which is advantageous for improving an authenticity of the image displayed on the display panel1.

With reference toFIG. 6again, the LCD panel further includes a liquid crystal layer13disposed between the array substrate12and the color film substrate11, and a backlight module configured to provide the light required for displaying an image. In some examples, a light source of the backlight module includes at least one monochromatic light-emitting diode (LED) light source. In this case, a monochromatic LED light source having a narrow line width is selected, which may effectively ensure that the wavelength ranges of the light for displaying the initial image are within the wavelength ranges of the light that the first filter portions11L allow to transmit and the wavelength ranges of the light that the second filter portions11R allow to transmit. For example, the light source of the backlight module includes monochromatic LED light sources each with a line width of less than 20 nm. In some other examples, the light source of the backlight module includes at least one laser light source. The arrangement of the at least one LED light source or the at least one laser light source, and the colors of light emitted by the at least one LED light source or the at least one laser light source may be set according to actual requirements.

As mentioned above, the display panel1is a LCD panel, and the LCD panel1includes the color film substrate11and the array substrate12that are disposed opposite to each other. This structure is merely an exemplary structure according to some embodiments, and the display panel1, as an LCD panel, can adopt other structures. For example, the LCD panel1includes only one substrate having functions of the array substrate12and the color film substrate11, that is, the substrate includes a pixel driving circuit of the array substrate12and a color filter layer of the color film substrate11. This substrate is referred to as a color filter on array (COA) substrate. In a case where the display panel1includes the COA substrate, a method of arranging the filter portions in the color filter layer may refer to the description described above with regard to the arrangement of the filter portions.

Of course, in addition to the LCD panel described above, the display panel1may also be a display panel having an active light-emitting function, such as an organic light-emitting diode (OLED) display panel. In some embodiments, with reference toFIGS. 8 and 9, the display panel1is an active light-emitting display panel, and the active light-emitting display panel includes an array substrate12′ including a plurality of first pixels GLand a plurality of second pixels GR. Each first pixel GLincludes a plurality of first light-emitting devices12L′, and each second pixel GRincludes a plurality of second light-emitting device12R′. Each first light-emitting device12L′ is configured to emit light, a wavelength range of which is within the wavelength ranges of the light that the first filter lens21allows to transmit. Each second light-emitting device12R′ is configured to emit light, a wavelength range of which is within the wavelength ranges of the light that the second filter lens22allows to transmit, thereby ensuring that the light provided by the plurality of first pixels GLand for displaying the first image S1and the light provided by the plurality of second pixels GRand for displaying the second image S2may independently enter the left eye L and the right eye R of the user, respectively, thereby achieving the display of the mixed image S including the first image S1and the second image S2by the display panel1.

With continued reference toFIGS. 8 and 9, in some embodiments, each first pixel GLincludes a plurality of first sub-pixels gL, and the plurality of first light-emitting devices12L′ are arranged in one-to-one correspondence with the plurality of first sub-pixels gL, that is, each first sub-pixel gLincludes a first light-emitting device12L′. Similarly, each second pixel GRincludes a plurality of second sub-pixels gR, and the plurality of second light-emitting devices12R′ are arranged in one-to-one correspondence with the plurality of second sub-pixels gR, that is, each second sub-pixel gRincludes a second light-emitting device12R′. The wavelength range of the light emitted by each first light-emitting device12L′ is the same as the wavelength range of the light required to be provided by a corresponding first sub-pixel gLto which the first light-emitting device12L′ belongs, and the wavelength range of the light emitted by each second light-emitting device12R′ is the same as the wavelength range of the light required to be provided by a corresponding second sub-pixel gRto which the second light-emitting device12R′ belongs, so that the first sub-pixels gLand the second sub-pixels gRmay provide the light that satisfies the required wavelength ranges.

For example, each first pixel GLincludes a first red sub-pixel gLR, a first green sub-pixel gLGand a first blue sub-pixel gLB. The wavelength range of the light required to be provided by the first red sub-pixel gLRis the wavelength range of the first red light, the wavelength range of the light required to be provided by the first green sub-pixel gLGis the wavelength range of the first green light, and the wavelength range of the light required to be provided by the first blue sub-pixel gLBis the wavelength range of the first blue light. The first red sub-pixel gLRincludes a first red light-emitting device, and the wavelength range of light emitted by the first red light-emitting device is the wavelength range of the first red light. The first green sub-pixel gLGincludes a first green light-emitting device, and the wavelength range of light emitted by the first green light-emitting device is the wavelength range of the first green light. The first blue sub-pixel gLBincludes a first blue light-emitting device, and the wavelength range of light emitted by the first blue light-emitting device is the wavelength range of the first blue light.

Similarly, each second pixel GRincludes a second red sub-pixel gRR, a second green sub-pixel gRGand a second blue sub-pixel gRB. The wavelength range of the light required to be provided by the second red sub-pixel gRRis the wavelength range of the second red light, the wavelength range of the light required to be provided by the second green sub-pixel gRGis the wavelength range of the second green light, and the wavelength range of the light required to be provided by the second blue sub-pixel gRBis the wavelength range of the second blue light. The second red sub-pixel gRRincludes a second red light-emitting device, and the wavelength range of light emitted by the second red light-emitting device is the wavelength range of the second red light. The second green sub-pixel gRGincludes a second green light-emitting device, and the wavelength range of light emitted by the second green light-emitting device is the wavelength range of the second green light. The second blue sub-pixel gRBincludes a second blue light-emitting device, and the wavelength range of light emitted by the second blue light-emitting device is the wavelength range of the second blue light.

In some embodiments, with reference toFIGS. 1 and 10-12, the first filter lens21includes a first lens211and a first filter layer212disposed on a surface of the first lens211, and the first filter layer212includes a plurality of first filter units212L. The second filter lens22includes a second lens221and a second filter layer222disposed on a surface of the second lens221, and the second filter layer222includes a plurality of second filter units222R. Wavelength ranges of light that the plurality of first filter units212L allow to transmit do not overlap with wavelength ranges of light that the plurality of second filter units222R allow to transmit. The wavelength ranges of the light for displaying the first image are within the wavelength ranges of the light that the plurality of first filter units212L allow to transmit, so that the light P1for displaying the first image included in the mixed image transmits the plurality of first filter units212L and enters the left eye L of the user as the light for displaying the left-eye image. The wavelength ranges of the light for displaying the second image are within the wavelength ranges of the light that the plurality of second filter units222R allow to transmit, so that the light P2for displaying the second image included in the mixed image transmits the plurality of second filter units222R and enters the right eye R of the user as the light for displaying the right-eye image.

Optionally, the first filter layer212and the second filter layer222are interference filter films. It will be noted that the interference filter film that is configured to form the first filter layer212and the interference filter film that is configured to form the second filter layer222have different filtering effects.

In addition, the first filter layer212and the second filter layer222are disposed on surfaces of respective lens, which may be as follows. The first filter layer212is disposed on a surface of the first lens211away from the display panel1, and the second filter layer222is disposed on a surface of the second lens221away from the display panel1. Alternatively, the first filter layer212is disposed on a surface of the first lens211close to the display panel1, and the second filter layer222is disposed on a surface of the second lens221close to the display panel1.

In the case where the first filter layer212is disposed on the surface of the first lens211away from the display panel1, the light P1for displaying the first image in the mixed image will first transmit the first lens211and then transmit the first filter layer212, so that the filtered light for displaying the first image directly enters the left eye of the user, thereby avoiding the problem of changing optical properties of the light caused by the light transmitting other optical elements. That is, the wavelength ranges of the filtered light for displaying the first image will not be changed due to optical interferences of other optical elements. Similarly, in the case where the second filter layer222is disposed on the surface of the second lens221away from the display panel1, the light P2for displaying the second image in the mixed image will first transmit the second lens221and then transmit the second filter layer222, so that the filtered light for displaying the second image directly enters the right eye of the user, thereby avoiding the problem of changing the optical properties of the light caused by the light transmitting other optical elements.

In a case where the display apparatus is configured to display a color image, in the light provided by the display panel and for displaying the mixed image, the wavelength ranges of the light for displaying the first image and the wavelength ranges of the light for displaying the second image include wavelength ranges of the light of a plurality of colors, respectively. Based on this, in some embodiments, with continued reference toFIG. 10, each first filter unit212L of the first filter layer212includes a plurality of first sub-filter units L1, and the wavelength ranges of the light of the plurality of color included in the wavelength ranges of the light for displaying the first image are within the wavelength ranges of the light that the plurality of first sub-filter units L1allow to transmit in one-to-one correspondence. That is, in each first filter unit212L, the wavelength range of the light that one of the first sub-filter units L1allows to transmit corresponds to the wavelength range of the light of one color included in the light for displaying the first image. With continued reference toFIG. 11, each second filter unit222R of the second filter layer222includes a plurality of second sub-filter units Rr, and the wavelength ranges of the light of the plurality of color included in the wavelength ranges of the light for displaying the second image are within the wavelength ranges of the light that the plurality of second sub-filter units Rr allow to transmit. That is, in each second filter unit222R, the wavelength range of the light that one of the second sub-filter units Rr allows to transmit corresponds to the wavelength range of the light of one color included in the light for displaying the second image.

For example, with continued reference toFIG. 10, in a case where the wavelength ranges of the light for displaying the first image include a wavelength range of first red light, a wavelength range of first green light and a wavelength range of first blue light, each first filter unit212L includes a first red sub-filter unit L1R, a first green sub-filter unit L1Gand a first blue sub-filter unit L1B. The wavelength range of the first red light is within a wavelength range of the light that the first red sub-filter unit L1Rallows to transmit, the wavelength range of the first green light is within a wavelength range of the light that the first green sub-filter unit L1Gallows to transmit, and the wavelength range of the first blue light is within a wavelength range of the light that the first blue sub-filter unit L1Ballows to transmit. With continued reference toFIG. 11, in a case where the wavelength ranges of the light for displaying the second image include a wavelength range of second red light, a wavelength range of second green light and a wavelength range of second blue light, each second filter unit222R includes a second red sub-filter unit RrR, a second green sub-filter unit RrGand a second blue sub-filter unit RrB. The wavelength range of the second red light is within a wavelength range of the light that the second red sub-filter unit RrRallows to transmit, the wavelength range of the second green light is within a wavelength range of the light that the second green sub-filter unit RrGallows to transmit, and the wavelength range of the second blue light is within a wavelength range of the light that the second blue sub-filter unit RrBallows to transmit.

It will be understood that the first filter layer212allows the light for displaying the first image to transmit, and the first image is displayed by the first pixels of the display panel. Therefore, each first red sub-filter unit L1Rof the first filter layer212and each first red sub-pixel gLRof the first pixel in the display apparatus may be formed by using the same red filter material, each first green sub-filter unit L1Gof the first filter layer212and each first green sub-pixel gLGof the first pixel in the display apparatus may be formed by using the same green filter material, and each first blue sub-filter unit L1Bof the first filter layer212and each first blue sub-pixel gLBof the first pixel in the display apparatus may be formed by using the same blue filter material, thereby facilitating purchasing the filter materials, improving a utilization rate of each of the filter materials and reducing a cost of fabricating the display apparatus.

Similarly, the second filter layer222allows the light for displaying the second image to transmit, and the second image is displayed by the second pixels of the display panel. Therefore, each second red sub-filter unit RrRof the second filter layer222and each second red sub-pixel gRRof the second pixel in the display apparatus may be formed by using the same red filter material, each second green sub-filter unit RrGof the second filter layer222and each second green sub-pixel gRGof the second pixel in the display apparatus may be formed by using the same green filter material, and each second blue sub-filter unit RrBof the second filter layer212and each second blue sub-pixel gRBof the second pixel in the display apparatus may be formed by using the same blue filter material, thereby facilitating purchasing the filter materials, improving the utilization rate of each of the filter materials and reducing the cost of fabricating the display apparatus.

Of course, the material for fabricating the first filter layer212and the second filter layer222may also be selected and determined according to a degree of colorization to be achieved. That is, wavelength ranges of light that the filter materials used by the first filter layer212and the second filter layer222allow to transmit are related to the degree of colorization to be correspondingly achieved. For example, in a case where the degree of colorization to be achieved by the first filter layer212and the second filter layer222is large, the wavelength ranges of the light that the filter materials used by the first filter layer212and the second filter layer222allow to transmit are small. Conversely, in a case where the degree of colorization to be achieved by the first filter layer212and the second filter layer222is small, the wavelength ranges of the light that the filter materials used by the first filter layer212and the second filter layer222allow to transmit are large.

Some embodiments of the present disclosure provide a display method, and the display method is applied to the display apparatus provided by the embodiments described above. With reference toFIGS. 2 and 13, the display method includes S100˜S200.

In S100, the display panel1of the display apparatus outputs light for displaying a mixed image including a first image and a second image.

In S200, the first filter lens21of the display apparatus filters the light for displaying the mixed image, so that the light P1for displaying the first image included in the mixed image transmits the first filter lens21; and the second filter lens22of the display apparatus filters the light for displaying the mixed image, so that the light P2for displaying the second image included in the mixed image transmits the second filter lens22.

Since the first filter lens21corresponds to the left eye of the user and the second filter lens22corresponds to the right eye of the user, the light P1transmitting the first filter lens21and for displaying the first image enters the left eye, and the light P2transmitting the second filter lens22and for displaying the second image enters the right eye. In this way, the light P1for displaying the first image serves as the light for displaying the left-eye image, the light P2for displaying the second image serves as the light for displaying the right-eye image, and the first image (i.e., the left-eye image) and the second image (i.e., the right-eye image) may be synthesized in the user's brain, so that the user observes the stereoscopic image.

Beneficial effects of the display method provided by some embodiments of the present disclosure are the same as the beneficial effects of the display apparatus provided by some of the embodiments described above, which are not elaborated herein.

The method described in some embodiments of the present disclosure may be implemented by means of executing instructions. The instructions may be performed by one or more processors, and may be stored in a random access memory (RAM), a flash memory, a read only memory (ROM), an erasable programmable read only memory (EPROM), an electrically erasable programmable read only memory (EEPROM), a register, a hard disk, a removable hard disk, a compact disk read only memory (CD-ROM) or any other form of a storage medium known in the art.

Some embodiments of the present disclosure provide a non-transitory computer-readable storage medium storing executable instructions that, when executed by a display apparatus, cause the display apparatus to perform the display method described in the above embodiments.

A person skilled in the art will appreciate that in one or more of the examples described above, the functions described herein may be implemented by using a hardware, a software, a firmware or any combination thereof. When implemented by using the software, the functions may be stored in a computer readable medium or transmitted as one or more instructions or codes on the computer readable medium. The computer readable medium includes both a computer storage medium and a communication medium, wherein the communication medium includes any medium that facilitates a transfer of a computer program from one location to another. The storage medium may be any available medium that can be accessed by a general-purpose computer or a special-purpose computer.