Patent Description:
As the development of the electronic devices, people are more concerned about whether the display screen will damage the eyes or not. The electronic devices could adopt the most advanced reflection-type display screen technique. The reflection-type display screen performs a reflection operation inside the display panel on the ambient light such that the display panel could display images. This reduces the influences upon the human eyes introduced by the LEDs in an ordinary display panel and thus reduces the eye fatigue in a certain degree.

However, in a conventional art, when the ambient light is not enough for the reflection-type display screen to perform the reflection operation. In other words, the reflection-type display screen cannot get enough light and thus its optical effect is reduced.

Document <NUM> (<CIT>), Document <NUM> (<CIT>), Document <NUM> (<CIT>), and Document <NUM> (<CIT>) are related arts, but none of them disclose that a thickness of the optical adhesive layer is equal to a distance from a top of the light guiding dots to the light guiding plate, and the top of the light guiding dots touches the panel.

One objective of an embodiment of the present invention is to provide a display module and a display device, capable of raising the transmission efficiency of light, such that the light could be sufficiently used to perform the reflection operation and the optical effect could be raised.

According to the claimed invention, a display module is disclosed. The display module comprises: a panel; a light guiding component and an optical adhesive layer. The light guiding component comprises a light guiding plate, having a side facing the panel; and a plurality of light guiding dots, equally spaced on the side of the light guiding plate. The optical adhesive layer is positioned on the side of the light guiding plate, wherein the optical adhesive layer is transparent and has a side pasted on and connected to the panel and the side of the transparent optical adhesive layer is comparatively far away from the light guiding component. A thickness of the optical adhesive layer is equal to a distance from a top of the light guiding dots to the light guiding plate, and the top of the light guiding dots touches the panel.

In some embodiments, the optical adhesive layer is a flexible glue that has a plurality of holes, and each of the holes correspondingly holds one of the plurality of light guiding dots, and wherein the flexible glue is pasted on and connected to the panel and the light guiding plate.

In some embodiments, the optical adhesive layer is a hard glue which is pasted on and connected to a top of the plurality of light guiding dots, and has a side pasted on and connected to the panel.

In some embodiments, the optical adhesive layer is a transparent cavity having a storage space; the transparent cavity comprises a transparent top surface, and a fixed side surface vertically extending from the transparent top surface; one side of the light guiding component having the plurality of light guiding dots faces the transparent cavity, an edge of the light guiding plate is connected to the fixed side surface, and a side of the transparent top surface comparatively far away from the light guiding component is connected to the panel.

In some embodiments, the fixed side surface of the transparent cavity is connected to the light guiding plate through spot gluing, and the transparent cavity and the light guiding plate form a closed light guiding cavity.

In some embodiments, a material of the transparent cavity is polyethylene terephthalate made by heat pressure.

In some embodiments, the panel comprises a display panel and a protection plate, the display panel and the protection plate are positioned oppositely; one side of the light guiding component having the plurality of light guiding dots faces the display panel; the optical adhesive layer is pasted on and connected to the display panel, and one side of the light guiding plate back on the display panel is connected to the protection plate through a soft glue.

In some embodiments, the panel comprises a display panel and a protection plate, the display panel and the protection plate are positioned oppositely; one side of the light guiding component having the plurality of light guiding dots faces the protection plate, the optical adhesive layer is pasted on and connected to the protection plate, and one side of the light guiding plate back on the protection plate is connected to the display panel through a soft glue.

In some embodiments, the display module further comprises a light source component, positioned on a side surface of the light guiding plate.

According to an embodiment of the present invention, a display device is disclosed. The display device comprises a shell, a power component and the above-mentioned component. The power supply component is electrically connected to the display module and the display module is embedded in the shell.

According to an embodiment of the present invention, the display module and the display device utilizes the optical adhesive layer on a side of the light guiding layer, where the light guiding component is placed. Furthermore, the optical adhesive layer is connected to the light guiding component such that the light guiding component is pasted on and connected to the panel through the optical adhesive layer. This could prevent the optical adhesive from covering the light guiding layer of the light guiding component or prevent the refractive index of the flowing air layer from affecting the light transmission efficiency of the light guiding layer. Thus, the light transmission efficiency of the light guiding plate is raised and the display performance and the optical effect of the display module are raised.

To describe the technical solutions in the embodiments of this application more clearly, the following briefly introduces the accompanying drawings required for describing the embodiments. Apparently, the accompanying drawings in the following description show merely some embodiments of this application, and a person of ordinary skill in the art may still derive other drawings from these accompanying drawings without creative efforts.

The invention is described below in detail with reference to the accompanying drawings, wherein like reference numerals are used to identify like elements illustrated in one or more of the figures thereof, and in which exemplary embodiments of the invention are shown. This invention may, however, be embodied in many different forms and should not be construed as limited to the particular embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention, as defined by the appended claims, to those skilled in the art. In the drawings, the size and relative sizes of layers and regions may be exaggerated for clarity.

In addition, the term "first", "second" are for illustrative purposes only and are not to be construed as indicating or imposing a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature that limited by "first", "second" may expressly or implicitly include at least one of the features. In the description of the present disclosure, the meaning of "plural" is two or more, unless otherwise specifically defined.

It should be understood that, when an element or layer is referred to herein as being "disposed on", "connected to" or "coupled to" another element or layer, it can be directly disposed on, connected or coupled to the other element or layer, or alternatively, that intervening elements or layers may be present. In contrast, when an element is referred to as being "directly disposed on," "directly connected to" or "directly coupled to" another element or layer, there are no intervening elements or layers present. In the figures, like numbers refer to like elements throughout.

Different methods or examples are introduced to elaborate different structures in the embodiments of the present disclosure. To simplify the method, only specific components and devices are elaborated by the present disclosure. These embodiments are truly exemplary instead of limiting the present disclosure. Identical numbers and/or letters for reference are used repeatedly in different examples for simplification and clearance. It does not imply that the relations between the methods and/or arrangement. The methods proposed by the present disclosure provide a variety of examples with a variety of processes and materials. However, persons skilled in the art understand ordinarily that the application of other processes and/or the use of other kinds of materials are possible.

Please refer to <FIG>. According to an embodiment of the present invention, a display module is disclosed. The display module comprises a panel <NUM>, a light guiding component <NUM> and a transparent optical adhesive layer <NUM>. The light guiding component <NUM> comprises a light guiding plate <NUM> and a plurality of light guiding dots <NUM>. The light guiding dots <NUM> are equally spaced on a side of the light guiding plate <NUM>. The side of the light guiding plate <NUM>, where the light guiding dots <NUM> are positioned, faces the panel <NUM>.

The optical adhesive layer <NUM> is positioned on the side of the light guiding plate, where the light guiding dots <NUM> are positioned. In addition, one side of the optical adhesive layer <NUM>, which is comparatively far away from the light guiding component <NUM>, is pasted on and connected to the panel <NUM>.

In this embodiment, the display module is an integrated display module, which at least comprises a panel <NUM>, a light guiding component <NUM>, and an optical adhesive layer <NUM>. The panel <NUM> comprises a display panel <NUM> and a protection plate <NUM>.

The display panel <NUM> is a reflection-type display panel <NUM>. The structure of the reflection-type display panel <NUM> comprises, in an order from the display surface to the inside: a polarizer, a λ/<NUM> plate, a color filter substrate, an Indium Tin Oxide (ITO) electrode, an alignment layer, a LC layer, an alignment layer, a reflector layer, an electrode layer, a TFT array substrate. The reflection-type display panel <NUM> could use the ambient light or other external light to perform a reflection operation to display images.

The protection plate <NUM> could be a touch capacitor screen or a protection film. The touch capacitor screen could be used such that a user could control the content of the display panel <NUM> by touch. The protection film could be used to protect the inner structure of the display module.

The light guiding component <NUM> is a combination of a light guiding layer and a light guiding plate <NUM>. The light guiding layer is fixed on any one side of the light guiding plate <NUM>. The light guiding component <NUM> could comprise two light guiding layers. The two light guiding layers could be respectively positioned on two sides of the light guiding plate <NUM>. That is, the light guiding component <NUM> comprises in order: one light guiding layer, the light guiding plate <NUM> and the other light guiding layer. The light guiding layers could raise the refractive index and thus raise the transmission efficiency.

In an embodiment, the light guiding layer could comprise a plurality of light guiding dots <NUM>. The light guiding dots <NUM> are equally spaced on the light guiding plate <NUM>. By arranging the light guiding dots <NUM> on the light guiding plate <NUM>, the transmission efficiency for transmitting light to the reflection-type display panel <NUM> could be raise and thus the display effect of the display module could be raised. In this embodiment, the light guiding dots <NUM> are equally distributed on the light guiding plate <NUM> and the number of the light guiding dots <NUM> on the light guiding plate <NUM> is as many as possible. Through the condensed distribution of the light guiding dots <NUM> on the light guiding plate <NUM>, the accuracy of light transmission could be raised.

In this embodiment, the optical adhesive layer <NUM> is between the panel <NUM> and the light guiding component <NUM> and positioned on the side of the light guiding plate <NUM> having the light guiding dots <NUM>. In this way, the light guiding dots <NUM>, which do not form a flat surface, could be pasted on and connected to the panel <NUM> through the optical adhesive layer <NUM>. The optical adhesive layer <NUM> is transparent and could be made with a material of a good transparency. Or, the optical adhesive layer <NUM> could have multiple holes to allow light to pass through. In this embodiment, the light guiding layer of the light guiding component <NUM> is formed by the light guiding dots <NUM>. When the transparency of the optical adhesive layer <NUM> is not enough, some holes could be formed, for example, through punching, on the optical adhesive layer <NUM> at the positions corresponding to the light guiding dots <NUM> on the light guiding plate <NUM> so allow more light to pass through the holes. That is, multiple holes are formed on the optical adhesive layer <NUM> and each of the holes is corresponding to one of the light guiding dots <NUM> at the corresponding position on the light guiding plate <NUM>. This allows the light to be transmitted through the holes to the light guiding dots <NUM>. When the transparency of the optical adhesive layer <NUM> is good, there is no need to have holes on the optical adhesive layer <NUM> because the light could efficiently pass through the optical adhesive layer and be transmitted to the light guiding dots <NUM>. This could raise the optical effect of the display module.

Please refer to <FIG>. The optical adhesive layer <NUM> is a flexible adhesive glue. There are multiple holes <NUM> on the flexible adhesive glue. Each of the holes correspondingly holds one of the light guiding dots <NUM>. The flexible glue is respectively pasted on and connected to the panel <NUM> and the light guiding plate <NUM>. Specifically, the flexible glue could be an optical adhesive glue. The holes <NUM> could be formed through punching the ordinary OCA glue at the locations corresponding to the light guiding dots <NUM> on the light guiding plate <NUM>. The other regions are used for bonding. That is, all the regions between the holes of the adhesive glue is used for bonding. The bonding method is: each of the holes <NUM> of the flexible adhesive glue correspondingly holds one of the light guiding dots <NUM> of the light guiding plate <NUM> such that the adhesive glue could ensure that the light path is not blocked because the light is allowed to pass through the light guiding dots <NUM>. Furthermore, the region between any two holes <NUM> of the adhesive glue is pasted on and connected to the light guiding plate <NUM> and the other side of the adhesive glue is pasted on and connected to the panel <NUM> such that the light guiding dots <NUM>, which do not form a flat surface, on the light guiding plate <NUM> could be pasted on and connected to the panel <NUM>.

Taking a side of the light guiding plate <NUM>, which is far away from the light guiding dots <NUM>, as the top, when the OCA adhesive glue is used, the thickness of the optical adhesive layer <NUM> could be equal to the distance from the top of the light guiding dots <NUM> on the light guiding plate <NUM> to the light guiding plate <NUM>. The top of the light guiding dots <NUM> on the light guiding plate <NUM> touches the panel <NUM>. This could prevent the flowing air from affecting the refraction index.

Please refer to <FIG>. The optical adhesive layer <NUM> is a hard adhesive glue. The hard adhesive glue is pasted on and connected to the top of the light guiding dots <NUM>. The other side of the hard adhesive glue is pasted on and connected to the panel <NUM>. Specifically, the hard adhesive glue is a solid optical glue and has a good viscosity and transparency. In this embodiment, the end of the light guiding plate <NUM> far away from the light guiding dots <NUM> is taken as the top. One side of the solid optical glue is pasted on the top of the light guiding dots <NUM> of the light guiding plate <NUM> and the other side of the solid optical glue is pasted on the panel <NUM> such that the light guiding dots <NUM>, which do not form a flat surface, on the light guiding plate <NUM> could be pasted on and connected to the panel <NUM>.

Please refer to <FIG>. The optical adhesive layer is a transparent cavity having a storage space. The transparent cavity comprises a transparent top surface <NUM> and a fixed side surface <NUM> vertically extending from the edge of the transparent top surface <NUM>. The side of the light guiding component <NUM> having the light guiding dots <NUM> is toward to the inside of the transparent cavity. The edge of the light guiding plate <NUM> is connected to the fixed side surface <NUM>. The side of the transparent top surface <NUM>, which is comparatively far away from the light guiding component <NUM>, is pasted on and connected to the panel <NUM>. The optical adhesive layer <NUM> is a half cavity formed by five surfaces. The half cavity has a storage space. Take a rectangular half cavity as an example. The half cavity comprises a transparent top surface <NUM> and four fixed side surface <NUM>. The four fixed side surfaces <NUM> are respectively connected to the edge of the transparent top surface <NUM> to form a half cavity having a storage space. The side of the light guiding plate <NUM> having the light guiding dots <NUM> is toward the inside of the cavity. In addition, the edge of the light guiding plate <NUM> is connected to the edge of the fixed side surfaces <NUM> of the cavity. For example, a glue could be used to connect the edge of the light guiding plate <NUM> to the edge of the fixed side surfaces <NUM> of the cavity such that the light guiding component <NUM> and the transparent cavity form a sealed cavity. The inner space of the cavity could be a vacuum and the light guiding dots <NUM> of the light guiding plate <NUM> are placed in the cavity. This could prevent the flowing air layer from affecting the refraction index when the light is transmitted to the light guiding dots <NUM>.

The top surface of the transparent cavity is transparent. The light could be transmitted through the transparent top surface to the light guiding dots <NUM> on the light guiding plate <NUM>. The light guiding dots <NUM> on the light guiding plate <NUM> could touch the inner side of the transparent top surface of the transparent cavity. Furthermore, because the light guiding plate <NUM> and the transparent cavity form a sealed cavity. This could prevent the flowing air layer from affecting the refraction index when the light is transmitted to the light guiding dots <NUM> and the light guiding plate <NUM>. In another embodiment, the light guiding dots <NUM> on the light guiding plate <NUM> does not touch the inner side of the transparent top surface of the transparent cavity. But the side of the transparent top surface which is comparatively far away from the light guiding component <NUM> touches the panel <NUM> such that the light guiding dots <NUM>, which do not form a flat surface, on the light guiding plate <NUM> could be pasted on and connected to the panel <NUM>.

The fixed side surfaces of the transparent cavity and the light guiding plate <NUM> are fixed and connected through spot gluing. The transparent cavity and the light guiding plate <NUM> form a sealed cavity. In this embodiment, a spot gluing method could be used to connect the fixed side surfaces of the transparent cavity and the light guiding plate <NUM> to form a sealed transparent cavity. Using the spot gluing could raise the sealing effect of the light guiding cavity.

The material of the transparent cavity is polyethylene terephthalate (PET) made by heat pressure. The polyethylene terephthalate is a type of thermoplastic polyeter, which could efficiently block the air and has a good transparency. The transparent cavity made by this material could raise the light transmission efficiency and the optical effect such that the light could pass through the top surface of the transparent cavity to the light guiding dots <NUM> on the light guiding plate <NUM>.

The panel <NUM> comprises a display panel <NUM> and a protection plate <NUM>. The display panel <NUM> and the protection plate <NUM> are oppositely placed. One side of the light guiding component <NUM> having the plurality of light guiding dots <NUM> faces the display panel <NUM>. The optical adhesive layer <NUM> is pasted on and connected to the display panel <NUM>. One side of the light guiding plate <NUM> back on the display panel <NUM> is connected to the protection plate <NUM> through a soft glue <NUM>. The soft glue <NUM> could be a foam glue. The structure of the foam glue is a frame structure with an opening in the middle. One side of the frame structure of the foam glue is pasted on and connected to the edge of one side of the light guiding plate, which does not have the light guiding dots <NUM>. The other side of the frame structure of the foam glue is pasted on and connected to the protection plate <NUM> to form the display module, which includes the display panel <NUM>, the optical adhesive layer <NUM>, the light guiding component <NUM> and the protection plate <NUM>.

One side of the light guiding plate <NUM>, which is back on the display panel <NUM>, could be connected to the protection plate <NUM> through other components. For example, the solid optical glue could be used to connect the side of the light guiding plate <NUM>, which is back on the display panel <NUM>, to the protection plate <NUM>. This change also obeys the spirit of the present invention.

In another embodiment, the panel <NUM> comprises a display panel <NUM> and a protection plate <NUM>. The display panel <NUM> and the protection plate <NUM> are oppositely placed. One side of the light guiding component <NUM> having the plurality of light guiding dots <NUM> faces the protection plate <NUM>. The optical adhesive layer <NUM> is pasted on and connected to the protection plate <NUM>. One side of the light guiding plate <NUM> back on the protection plate <NUM> is connected to the display panel <NUM> through a soft glue <NUM>. The soft glue <NUM> could be a foam glue. The structure of the foam glue is a frame structure with an opening in the middle. One side of the frame structure of the foam glue is pasted on and connected to the edge of one side of the light guiding plate, which does not have the light guiding dots <NUM>. The other side of the frame structure of the foam glue is pasted on and connected to the display panel <NUM> to form the display module, which includes the display panel <NUM>, the optical adhesive layer <NUM>, the light guiding component <NUM> and the protection plate <NUM>.

One side of the light guiding plate <NUM>, which is back on the display panel <NUM>, could be connected to the display panel <NUM> through other components. For example, the solid optical glue could be used to connect the side of the light guiding plate <NUM>, which is back on the display panel <NUM>, to the display panel <NUM>. In addition, polyethylene terephthalate (PET) made by heat pressure could be used to form the adhesive layer to connect the light guiding plate <NUM> to the display panel <NUM>. This change also obeys the spirit of the present invention.

Please refer to <FIG>. The two sides of the light guiding plate <NUM> respectively have a plurality of light guiding dots <NUM>. The light guiding component <NUM> comprises: a light guiding plate <NUM>, a first light guiding layer on one side of the light guiding plate <NUM>, and a second light guiding layer on the other side of the light guiding plate <NUM>. The first light guiding layer comprises a plurality of first light guiding dots <NUM>. The second light guiding layer comprises a plurality of first light guiding dots <NUM>. The panel <NUM> comprises a display panel <NUM> and a protection plate <NUM>. The display panel <NUM> and the protection plate <NUM> are oppositely placed. The light guiding component <NUM> is placed between the display panel <NUM> and the protection plate <NUM>. The first optical adhesive layer <NUM> is placed between the display panel <NUM> and the first light guiding dots <NUM> on the light guiding plate <NUM>. The first adhesive layer <NUM> could make the first light guiding dots <NUM> (which do not form a flat surface) on the light guiding plate <NUM> pasted on and connected to the display panel <NUM>. The second optical adhesive layer <NUM> is placed between the protection plate <NUM> and the second light guiding dots <NUM> on the light guiding plate <NUM>. The second optical adhesive layer <NUM> could make the second light guiding dots <NUM> (which do not form a flat surface) on the light guiding plate <NUM> pasted on and connected to the protection plate <NUM>. The first optical adhesive layer <NUM> and the second optical adhesive layer <NUM> could respectively be one of the optical adhesive glue (OCA), the solid optical glue, and the transparent cavity. The first optical adhesive layer <NUM> and the second optical adhesive layer <NUM> could be any combination of the above-mentioned types of adhesive materials. All changes obey the spirit of the present invention.

Furthermore, a light source component could be placed in the display module. The light source component could be placed at a side surface of the light guiding plate <NUM>. The light source component could be a model or component of light emitting diodes and any other component that could provide light sources. This is just an example, not a limitation of the present invention. Through placing the light source component, it could ensure enough light source could be provided to the display module and could be more reliable.

According to an embodiment of the present invention, a display device is disclosed. The display device comprises a shell, a power component, and any one of the above-mentioned display module. The power component is electrically connected to the display module. The display module is embedded in the shell.

The display module comprises a panel <NUM>, a light guiding component <NUM> and a transparent optical adhesive layer <NUM>. The light guiding component <NUM> comprises a light guiding plate <NUM> and a plurality of light guiding dots <NUM>. The light guiding dots <NUM> are equally spaced on the light guiding plate <NUM>. The side of the light guiding plate <NUM>, where the light guiding dots <NUM> are positioned, faces the panel <NUM>. The optical adhesive layer <NUM> is positioned on the side of the light guiding plate, where the light guiding dots <NUM> are positioned. In addition, one side of the optical adhesive layer <NUM>, which is comparatively far away from the light guiding component <NUM>, is pasted on and connected to the panel <NUM>. In an embodiment, the optical adhesive layer <NUM> is placed on the side of the light guiding component <NUM> having the light guiding layer. The optical adhesive layer <NUM> is connected to the light guiding component <NUM> such that the light guiding component <NUM> is pasted on and connected to the panel <NUM> through the optical adhesive layer <NUM>. This prevent the optical adhesive glue from covering the light guiding layer of the light guiding component <NUM> or prevent the refraction index of the flowing air layer from affecting the light transmission efficiency of the light guiding layer in the light guiding component <NUM>. This could raise the optical effect of the light guiding plate <NUM> and thus raises the display performance of the display module.

Claim 1:
A display module, comprising:
a panel (<NUM>);
a light guiding component (<NUM>), comprising:
a light guiding plate (<NUM>), having a side facing the panel; and
a plurality of light guiding dots (<NUM>), equally spaced on the side of the light guiding plate; and
an optical adhesive layer (<NUM>), positioned on the side of the light guiding plate, wherein the optical adhesive layer is transparent and has a side pasted on and connected to the panel and the side of the optical adhesive layer is comparatively far away from the light guiding component,
characterized in that a thickness of the optical adhesive layer (<NUM>) is equal to a distance from a top of the light guiding dots (<NUM>) to the light guiding plate (<NUM>), and the top of the light guiding dots (<NUM>) touches the panel (<NUM>).