OLED display panel and display device including the same

The disclosed OLED display panel includes: an OLED unit, including one or more pixel light-emitting units, wherein light emitted from the pixel light-emitting units is transmitted in a first area; a rotatable optical component, arranged on a transmission path of the light emitted from the pixel light-emitting units, wherein the light emitted from the pixel light-emitting units is transmitted onto the optical component and then reflected by the same, and light reflected by the optical component, when the optical component is rotated, is projected onto a second area within a predetermine period, wherein the second area is larger than the first area; and a light-transmitting display substrate, arranged on a transmission path of the light reflected by the optical component and arranged corresponding to the second area.

CROSS-REFERENCE TO RELATED APPLICATION

This application is the U.S. national phase of PCT Application No. PCT/CN2015/090075 filed on Sep. 21, 2015, which claims a priority to Chinese Patent Application No. 201520275554.2 filed on Apr. 30, 2015, the disclosures of which are incorporated in their entirety by reference herein.

TECHNICAL FIELD

The present disclosure relates to the field of displayer technology, and in particular to an OLED display panel and a display device including the same.

BACKGROUND

For an organic light-emitting diode (OLED) display at present using an OLED to display, a light and thin display is desired by the user and the manufacturer.

FIG. 1is a schematic view showing an OLED displayer in the related art. An OLED unit3arranged between a first substrate1and a second substrate2has a size and an area corresponding to the first substrate1and the second substrate2, and the region corresponding to the first substrate1and the second substrate2forms a display area of the display, therefore the size of the OLED unit3is required to correspond to the entire display area. However, a manufacturing technology of an OLED light-emitting unit is not mature, so the production cost is high, and it is difficult to reduce the cost especially when using an outdoor large-size OLED display.

SUMMARY

An object of the present disclosure is to provide an OLED display panel and a display device including the same, whereby a display by the entire display screen may be realized by using one bar-like OLED unit, thereby reducing a manufacturing cost when applying a large-size OLED unit in the displayer.

An OLED display panel is provided by the present disclosure, including:

an OLED unit, including one or more pixel light-emitting units, wherein light emitted from the pixel light-emitting units is transmitted in a first area;

a rotatable optical component, arranged on a transmission path of the light emitted from the pixel light-emitting units, wherein the light emitted from the pixel light-emitting units is transmitted onto the optical component and then reflected by the same, and light reflected by the optical component, when the optical component is rotated, is projected onto a second area within a predetermine period, wherein the second area is larger than the first area; and

a light-transmitting display substrate, arranged on a transmission path of the light reflected by the optical component and arranged corresponding to the second area.

Optionally, the OLED display panel further includes a lens arranged at a side of the light-transmitting display substrate where the light reflected by the optical component enters, wherein the light reflected by the optical component is transmitted and passed through the lens, and the transmission direction of the light reflected by the optical component is changed from different directions to a same direction after passing through the lens.

Optionally, the light reflected by the optical component, which is transmitted along different directions, is transmitted along a direction perpendicular to the light-transmitting display substrate after passing through the lens.

Optionally, the optical component includes a plurality of protruded prisms with different inclination angles.

Optionally, the OLED display panel further includes a roller, wherein the plurality of protruded prisms is arranged on a part of an external surface of the roller.

Optionally, the OLED display panel further includes a roller, wherein the plurality of protruded prisms is arranged on the entire external surface of the roller.

Optionally, each pixel light-emitting unit includes a plurality of sub pixel units which emit different colors of light, wherein the plurality of sub pixel units which emit different colors of light is arranged in the first area in sequence along a third direction, and an axis direction of the roller is perpendicular to the third direction.

Optionally, each sub pixel unit includes an anode layer, a cathode layer and an organic functional layer arranged between the anode layer and the cathode layer, wherein the organic functional layer includes a hole transport layer, a light-emitting layer and an electron transport layer.

Optionally, a light-emitting surface of the OLED unit includes a first edge and a second edge which are perpendicular to each other, wherein the third direction is parallel to the first edge, and a width of the second edge is equal to or smaller than a length of the protruded prisms extending along the axis direction of the roller.

Optionally, the light emitted from the pixel light-emitting units is transmitted in the first area along a first direction, and the light reflected by the optical component which is transmitted along different directions is transmitted along a second direction after passing through the lens, wherein the second direction is perpendicular to the first direction.

Optionally, the optical component is rotated clockwise or anticlockwise within the predetermined period.

Optionally, the OLED display panel further includes a case body, wherein the light-transmitting display substrate is arranged at a first side of the case body, and the OLED unit is arranged at a second side of the case body, wherein the second side is perpendicular to the first side; the optical component is arranged at a position where a third side and a fourth side which are adjacent to each other are connected.

A display device is further provided by the present disclosure, including at least one OLED display panel hereinabove, wherein the light-transmitting display substrates of the OLED display panels are jointed together to form a display screen of the display device

Optionally, the display device hereinabove further includes a control structure for controlling light-emitting status of the OLED unit of each OLED display panel.

According to at least one of the technical solutions hereinabove, by reflection of the light emitted from the OLED unit by the rotatable optical component and the rotation of the rotatable optical component, the area of the light emitted from the OLED unit with a small light-emitting area or even a single OLED unit may be enlarged to become a large-area surface light source, therefore the area of the OLED unit is not required to correspond to the entire display area of the display screen, thereby reducing a manufacturing cost when applying a large-size OLED unit in the display.

DETAILED DESCRIPTION

In order to make the objects, the technical solutions and the advantages of the present disclosure more apparent, the present disclosure will be described hereinafter in conjunction with the drawings and embodiments.

A structure and a working principle of an OLED unit according to some embodiments of the present disclosure will be described in details in conjunction withFIG. 2. Referring toFIG. 2, the OLED display panel includes:

an OLED unit10, including one or more pixel light-emitting units, wherein light in different colors emitted from the pixel light-emitting units are transmitted in a first area;

a rotatable optical component20, arranged on a transmission path of the light emitted from the pixel light-emitting units, wherein the light emitted from the pixel light-emitting units is incoming onto the optical component and then reflected by the same, and light reflected by the optical component20, when the optical component20is rotated, is projected onto a second area within a predetermine period, wherein the second area is larger than the first area; and

a light-transmitting display substrate30, arranged on a transmission path of the light reflected by the optical component20and arranged corresponding to the second area.

According to the OLED display panel of the structure hereinabove, by the reflection of the light emitted from the OLED unit by the rotatable optical component and the rotation of the rotatable optical component, the light emitted from a relative small light-emitting area of the OLED unit may be projected onto a larger area within the predetermined period, such that the area of light emitted from the OLED unit with a small light-emitting area or even a single OLED unit may be enlarged to become a large-area surface light source, therefore the area of the OLED unit is not required to correspond to the entire display area of the display screen, thereby reducing a manufacturing cost when applying a large-size OLED unit in the display.

In the OLED display panel according to some embodiments of the present disclosure, the OLED unit10has a structure of the OLED device in the related art, which includes one or more pixel light-emitting units, and each pixel light-emitting unit includes sub pixel units which emit at least three colors of light (e.g., a plurality of sub pixel units which emit red, green and blue light).FIG. 3is a schematic view showing a pixel light-emitting unit. A first sub pixel unit displaying a first color, a second sub pixel unit displaying a second color and a third sub pixel unit displaying a third color each includes an anode layer, a cathode layer and an organic functional layer arranged between the anode layer and the cathode layer, wherein the organic functional layer includes a hole transport layer, a light-emitting layer and an electron transport layer. In different sub pixel units, light-emitting layers are formed by different materials, so as to emit different colors of light. The sub pixel units emitting red, green and blue light are arranged in sequence, so as to realize a color image display.

The structure of the OLED10hereinabove is known by those skilled in the art, and the detailed description thereof is omitted herein.

FIG. 4is a plan view of a bar-like OLED unit10. For example, adjacent two edges of the OLED unit10extend along a X direction (a third direction) and a Y direction (a second direction) respectively, and each sub pixel unit thereof is bar-like, wherein a lengthwise direction of each sub pixel unit is the Y direction and the sub pixel units are arranged along the X direction, such that the OLED10with a certain width along the X direction is formed.

By the arrangement hereinabove, the light-emitting area of the pixel light-emitting unit is an area enclosed by four edges of the pixel light-emitting unit, and the entire light-emitting area of the OLED unit10is an area enclosed by four edges of the OLED unit10(i.e., a first area).

FIG. 5is a schematic view showing the optical component20. In some embodiments of the present disclosure, the optical component20includes a plurality of protruded prisms22with different inclination angles. Referring toFIG. 5, the optical component20is arranged around a rotatable roller21, and the plurality of protruded prisms22is arranged on a part of an external surface of the roller21. A lengthwise direction of each protruded prism22is parallel to an axis direction of the roller21, and the plurality of protruded prisms22is arranged in sequence on the external surface of the roller21.

As shown inFIG. 2, the optical component is arranged at a side of the OLED unit10. The sub pixel units of the OLED unit10are arranged along the X direction (the third direction), and the axis direction of the roller21around which the protruded prisms22are arranged is perpendicular to the X direction (i.e., parallel to the Y direction), such that an extending direction of each protruded prism22is parallel to the lengthwise direction of each sub pixel unit.

As shown inFIG. 4, a first edge11of a light-emitting surface of the OLED10extends along the X direction (i.e., the third direction), and a second edge12(i.e., the edge extending along the Y direction) which is perpendicular to the first edge11of the OLED unit10has a certain width. Optionally, the width is equal to or smaller than the length of each protruded prism22extending along the axis direction of the roller21, such that all the light emitted from the light-emitting surface of the OLED10may be transmitted onto the protruded prisms22.

In addition, the length of each pixel light-emitting unit of the OLED unit10extending along the Y direction may be equal to a length of the second edge12of the OLED unit10.

According to the arrangement of the optical component20and the OLED unit10hereinabove, the optical component20is arranged at a side of the OLED unit10and on the transmission path of the light emitted from the OLED unit10, and the light emitted from the OLED unit10may further be transmitted onto part of the prisms of the optical component20.

By the optical component20hereinabove, the light emitted from the pixel light-emitting units of the OLED unit10is transmitted along the first direction and the first area is formed, and then the light is transmitted onto the prism structure and then reflected by the same. When the optical component20is not rotated, after the light emitted from the OLED unit10is reflected by part of the prisms, an irradiation area of the reflected light has no obvious difference with an irradiation area of the light emitted from the OLED unit10. When the optical component20is rotated at a high speed, the light emitted from the OLED unit10may be projected onto different protruded prisms22of the optical component20at different time points of the predetermined period. Because inclination angles of the protruded prisms22are different, the light may be reflected in different angles by the protruded prisms22and then projected onto the second area within the predetermined period, wherein the second area is larger than the first area. Referring toFIG. 2, the second area may be corresponding to the whole area of the light-transmitting display substrate30.

In some embodiments of the present disclosure, referring toFIG. 2, the roller21of the optical component20may be arranged to rotate clockwise or anticlockwise. However, whether the roller21is rotated clockwise or anticlockwise, it should be guaranteed that, by the arrangement of the protruded prisms22of the optical component20, all the light emitted from the OLED unit10may be projected onto the protruded prisms22rather than other areas outside the protruded prisms22within the predetermined period of the rotation of the roller21. Optionally, the protruded prisms22are arranged on the entire external surface of the roller21.

Furthermore, in order to make the light transmitting to the light-transmitting display substrate30to be parallel light (i.e., similar to light emitted from a surface light source), referring toFIG. 2, the OLED display panel according to some embodiments of the present disclosure further includes a lens40arranged at a side of the light-transmitting display substrate30where the light reflected by the optical component20enters. By the lens40, the light reflected along different directions by the optical component20are all transmitted along the third direction after passing through the lens40. Optionally, the third direction is perpendicular to the light-transmitting display substrate30and the transmission direction of the light emitted from the OLED unit10(the first direction).

According to some embodiments of the present disclosure, after the light emitted from the pixel light-emitting units of the OLED unit10is reflected by the optical component20, the reflected light is projected onto the second area within the predetermined period. The light-transmitting display substrate30is arranged based on the second area. That is, all the light reflected by the optical component20is projected onto the light-transmitting display substrate30. Correspondingly, the lens40is parallel to the light-transmitting display substrate30, and the lens40is arranged at a side of the light-transmitting display substrate30adjacent to the optical component20and also arranged based on the second area, such that all the light reflected by the optical component20may be transmitted onto the light-transmitting display substrate30after passing through the lens40.

By the arrangement hereinabove, when the roller22is rotated at a high speed within the predetermined period, the light emitted from the OLED unit10is reflected by the optical component20, and then the light reflected by the optical component20is projected onto an area corresponding to the light-transmitting display substrate30from up bottom or from bottom up within the predetermined period, so as to light up the light-transmitting display substrate30from up bottom or from bottom up, thereby realizing one time of data refreshing and displaying an image. When the entire OLED unit10emits red light, the light-transmitting display substrate30displays a red image; when the entire OLED unit10emits green light, the light-transmitting display substrate30displays a green image; when the entire OLED unit10emits blue light, the light-transmitting display substrate30displays a blue image.

Optionally, in order to make a lightness of the light-transmitting display substrate30uniform, a power supply or an optical energy lost of the OLED unit10may be adjusted to output incrementally or degressively light within one refreshing period.

Furthermore, referring toFIG. 2, the OLED display panel according to some embodiments of the present disclosure further includes a case body50, wherein the light-transmitting display substrate30is arranged at a first side51of the case body50, and the OLED unit10is arranged at a second side52of the case body50, wherein the second side52is perpendicular to the first side51; the optical component20is arranged at a position where a third side53and a fourth side54which are adjacent to each other are connected.

The OLED display panel according to some embodiments of the present disclosure has a structure different from that of the OLED display panel in the related art, wherein the OLED unit, which is smaller than the light-transmitting display substrate, is arranged at a side of the light-transmitting display substrate rather than parallel to the light-transmitting display substrate, such that the OLED unit may be made smaller in a large-screen OLED display, thereby reducing a manufacturing cost when a large-size OLED unit is applied.

A display device is further provided by some embodiments of the present disclosure, including at least one OLED display panel hereinabove, and the light-transmitting display substrates of the OLED display panels are jointed together to form a display screen of the display device.

Furthermore, the display device further includes a control structure for controlling light-emitting status of the OLED unit of each OLED display panel. Each OLED display panels is controlled by the control structure to display with a lightness or with a color corresponding to the area where the OLED display panel is arranged, such that a predetermined pattern may be displayed on the entire display screen formed by jointing the OLED display panels together.