Anti-glare display device

Abstract

To provide an anti-glare display device that realizes excellent display quality. [Solution] The anti-glare display device 3 comprises a display panel 30, a front light module 20, and an upper cover 10, which are stacked in order. The front light module comprises a light source 201 and a light guide plate 202, and the light guide plate is located on the transmission path of the illumination light IL. The upper cover comprises a first upper surface 1011 and a first lower surface 1021 within the display area, and both the first upper surface and the first lower surface are non-flat surfaces. The first lower surface of the upper cover is in direct contact with the light guide plate.

Description

[Technical field]

[0001] The present invention relates to a display device, and more particularly to an anti-glare display device. [Background technology]

[0002] Currently known reflective displays are specialized products that need to utilize ambient light to achieve screen display effects, but the ambient light may cause glare on some surfaces within the device, reducing display quality.

[0003] It should be noted that this "Background Art" section is intended only to aid in understanding the present invention, and therefore the contents disclosed in this "Background Art" may include contents that do not constitute well-known art known to those skilled in the art. Therefore, the contents disclosed in this "Background Art" do not imply that the contents or the problems that one or more embodiments of the present invention are intended to solve were already known or recognized by those skilled in the art prior to the filing of the present invention. Summary of the Invention

[0004] The present invention provides an anti-glare display device that performs anti-glare treatment on all surfaces that may cause glare, thereby achieving excellent display quality.

[0005] Other objects and advantages of the present invention can be further understood from the technical features disclosed in the present invention.

[0006] In order to achieve one, some or all of the above objects or other objects, an anti-glare display device according to an embodiment of the present invention has a display area and a non-display area surrounding the display area. The anti-glare display device includes a display panel, a frontlight module, and an upper cover. The frontlight module includes a light source and a light guide plate, the light source is used to provide illumination light, and the light guide plate is located on a transmission path of the illumination light. The upper cover has a first upper surface and a first lower surface within the display area, the first upper surface is located on a side of the upper cover away from the light guide plate, the first lower surface is located on a side of the upper cover toward the light guide plate, and both the first upper surface and the first lower surface are non-flat surfaces. The frontlight module is disposed between the display panel and the upper cover, and the first lower surface of the upper cover is in direct contact with the light guide plate.

[0007] In one embodiment, the top cover further comprises a second top surface and a second bottom surface within the non-display area, the second top surface being located on the side of the top cover away from the light guide plate and surrounding the first top surface, and the second bottom surface being located on the side of the top cover toward the light guide plate and surrounding the first bottom surface.

[0008] In one embodiment, the upper cover comprises a transparent substrate and an anti-glare film arranged in a stacked manner, the anti-glare film is located between the transparent substrate and the light guide plate, a first lower surface is located on the anti-glare film, and a second lower surface is located on the transparent substrate.

[0009] In one embodiment, the anti-glare display device further comprises an adhesive layer, and the anti-glare film is attached to the transparent substrate by the adhesive layer.

[0010] In one embodiment, the upper cover comprises a transparent substrate and an anti-glare film arranged in a stacked manner, the transparent substrate is located between the anti-glare film and the light guide plate, a first upper surface is located on the anti-glare film, and a second upper surface is located on the transparent substrate.

[0011] In one embodiment, the anti-glare display device further comprises an adhesive layer, and the anti-glare film is attached to the transparent substrate by the adhesive layer.

[0012] In one embodiment, the top cover is a transparent substrate, the top cover has a plurality of micro-structures on a side facing the light guide plate, and the first lower surface is a structured surface including the plurality of micro-structures.

[0013] In one embodiment, the top cover is a transparent substrate, the top cover has a plurality of micro-structures on a side thereof facing away from the light guide plate, and the first top surface is a structured surface including the plurality of optical micro-structures.

[0014] In one embodiment, the anti-glare display device further comprises a plurality of fasteners disposed between the second lower surface and the light guide plate to fasten the upper cover and the light guide plate.

[0015] In one embodiment, the anti-glare display device further comprises a plurality of fasteners, each fastener being disposed on a side of the upper cover and a side of the light guide plate to fasten the upper cover and the light guide plate.

[0016] In one embodiment, the light guide plate comprises a plurality of light guiding structures, the plurality of light guiding structures being disposed on a side of the light guide plate facing the upper cover and overlapping the first upper surface.

[0017] As described above, the anti-glare display device in the embodiment of the present invention has at least one of the following advantages: since both the upper and lower surfaces of the top cover have anti-glare surfaces, and no adhesive exists in the display area between the top cover and the light guide plate, even if multiple light guiding structures are disposed on the top surface of the light guide plate, the light guiding effect of the multiple light guiding structures will not be affected, and the light guiding effect of the light guide plate and the anti-glare effect of the top cover can be achieved simultaneously.

[0018] In order to make the above features and advantages of the present invention more clearly comprehensible, the present invention is described in detail below with reference to the accompanying drawings in which: [Brief description of the drawings]

[0019] [Figure 1A] FIG. 1A is a schematic diagram of a display device based on a comparative example. [Figure 1B]FIG. 1B is a schematic diagram of a display device based on a comparative example. [Figure 2A] FIG. 2A is a schematic diagram of an anti-glare display device according to an embodiment of the present invention. [Figure 2B] FIG. 2B is a plan view of the underside of the top cover of the anti-glare display device shown in FIG. 2A. [Figure 2C] FIG. 2C is a plan view of the top surface of the top cover of the anti-glare display device shown in FIG. 2A. [Figure 2D] FIG. 2D is a schematic diagram of an upper cover of an anti-glare display device according to an embodiment of the present invention. [Figure 2E] FIG. 2E is a schematic diagram of an upper cover of an anti-glare display device according to an embodiment of the present invention. [Figure 2F] FIG. 2F is a schematic diagram of an upper cover of an anti-glare display device according to an embodiment of the present invention. [Diagram 3] FIG. 3 is a schematic diagram of an anti-glare display device according to an embodiment of the present invention. [Figure 4] FIG. 4 is a schematic diagram of an anti-glare display device according to an embodiment of the present invention. [Diagram 5] FIG. 5 is a schematic diagram of an anti-glare display device according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] The above and other technical contents, features and effects of the present invention will become more apparent from the following detailed description of preferred embodiments based on the accompanying drawings. Note that the directional terms used in the following embodiments, such as up, down, left, right, front or back, are merely used to refer to the directions in the accompanying drawings. Therefore, the directional terms used are used to explain the present invention, and are not intended to limit the present invention.

[0021] Referring to FIG. 1A, this shows a schematic diagram of a display device based on a comparative example. The display device 1 includes an upper cover 10A, a front light module 20, and a display panel 30, which are stacked in order. The front light module 20 includes a light source 201 and a light guide plate 202. The light source 201 is used to provide illumination light IL, and the light guide plate 202 is located on the transmission path of the illumination light IL. In this comparative example, an anti-glare layer is disposed on the upper surface A1 of the upper cover 10A. No anti-glare layer is disposed on the lower surface A2 of the upper cover 10A, that is, the lower surface A2 is a smooth surface, so that the ambient light EL is reflected by the lower surface A2, causing glare GL and degrading the display quality of the display device 1.

[0022] Referring to FIG. 1B, this shows a schematic diagram of a display device based on a comparative example. The display device 2 includes an upper cover 10B, a front light module 20, and a display panel 30, which are stacked in order. The front light module 20 includes a light source 201 and a light guide plate 202. The light source 201 is used to provide illumination light IL, and the light guide plate 202 is located on the transmission path of the illumination light IL. In this comparative example, an anti-glare layer is disposed on the lower surface B2 of the upper cover 10B. No anti-glare layer is disposed on the upper surface B1 of the upper cover 10B, that is, the upper surface B1 is a smooth surface, so that the ambient light EL is reflected by the upper surface B1, causing glare GL and degrading the display quality of the display device 2.

[0023] 2A, 2B, and 2C, the anti-glare display device 3 includes an upper cover 10, a front light module 20, and a display panel 30, which are stacked in this order. The front light module 20 is disposed between the display panel 30 and the upper cover 10. The front light module 20 includes a light source 201 and a light guide plate 202. The light source 201 is used to provide illumination light IL, and the light guide plate 202 is located on the transmission path of the illumination light IL. The light source 201 is, for example, an edge-type light source. The light source 201 can include a number of light-emitting diodes (LEDs). The material of the light guide plate 202 is plastic, glass, or other light-transmitting material.

[0024] The anti-glare display device 3 has a display area DR and a non-display area NDR surrounding the display area DR. The upper cover 10 includes a first upper surface 1011 and a first lower surface 1021 in the display area DR, and further includes a second upper surface 1012 and a second lower surface 1022 in the non-display area NDR. The first upper surface 1011 and the second upper surface 1012 are located on a side of the upper cover 10 away from the light guide plate 202, and the first lower surface 1021 and the second lower surface 1022 are located on a side of the upper cover 10 facing the light guide plate 202. The second upper surface 1012 surrounds the first upper surface 1011, and the second lower surface 1022 surrounds the first lower surface 1021. Both the first upper surface 1011 and the first lower surface 1021 are not flat surfaces, and the first lower surface 1021 of the upper cover 10 is in direct contact with the light guide plate 202 .

[0025] In this embodiment, the upper cover 10 comprises a transparent substrate 100, and the first lower surface 1021 is an anti-glare surface formed by disposing an anti-glare film 120 on the transparent substrate 100. Specifically, the anti-glare film 120 can be formed by attaching the anti-glare film 120 to the lower surface of the transparent substrate 100 by an adhesive layer. The anti-glare film 120 can be selected as SRF (Super Retarder Film) or TAC (Tri-acetate cellulose). If the anti-glare film 120 is SRF or TAC, the surface of the anti-glare film 120 is wet-treated to make the surface of the anti-glare film 120 have a rough structure. In this case, the first lower surface 1021 is located on the anti-glare film 120, and the second lower surface 1022 is located on the transparent substrate 100 (see FIG. 2A). However, the present invention is not limited thereto, and in some embodiments, the anti-glare film 120 can be formed on the surface of the transparent substrate 100 by a coating process. No adhesive layer is disposed between the antiglare film 120 formed by the coating process and the transparent substrate 100, and the surface of the antiglare film 120 formed by the coating process can have a rough structure without performing wet processing.

[0026] In the embodiment shown in Fig. 2A, the first top surface 1011 is an anti-glare surface formed by performing a polishing process or a cutting process on the transparent substrate 100. As shown in Fig. 2A, the transparent substrate 100 has a plurality of micro-structures MS on the side away from the light guide plate 202, and the first top surface 1011 is a structured surface including the plurality of optical micro-structures MS. In this case, both the first top surface 1011 and the second top surface 1012 are located on the transparent substrate 100.

[0027] However, the present invention is not limited thereto, and three examples are described below. In Example 1, referring to FIG. 2D, the first upper surface 1011 and the first lower surface 1021 are both anti-glare surfaces formed by performing a polishing process or a cutting process on the transparent substrate 100, that is, the first upper surface 1011 and the first lower surface 1021 are both structured surfaces including optical microstructures MS. In Example 1, the first upper surface 1011, the first lower surface 1021, the second upper surface 1012, and the second lower surface 1022 are all located on the transparent substrate 100. In Example 2, referring to FIG. 2E, the first upper surface 1011 and the first lower surface 1021 are both anti-glare surfaces formed by disposing an anti-glare film 120 on the transparent substrate 100 in the display area DR. The embodiment of the anti-glare film 120 is not particularly described. In Example 2, the first upper surface 1011 and the first lower surface 1021 are located on the anti-glare film 120, and the second upper surface 1012 and the second lower surface 1022 are located on the transparent substrate 100. In Example 3, referring to FIG. 2F, the first upper surface 1011 is an anti-glare surface formed by disposing the anti-glare film 120 on the transparent substrate 100 in the display area DR, and the embodiment of the anti-glare film 120 is not particularly described. The first lower surface 1021 is an anti-glare surface formed by subjecting the transparent substrate 100 to a polishing process or a cutting process, that is, the first lower surface 1021 is a structured surface including an optical microstructure MS. In Example 3, the first upper surface 1011 is located on the anti-glare film 120, the second upper surface 1012 is located on the transparent substrate 100, and the first lower surface 1021 and the second lower surface 1022 are both located on the transparent substrate 100.

[0028] 2A, in this embodiment, the anti-glare display device 3 further includes a fastener 40. When SRF or TAC is selected for the anti-glare film 120, the fastener 40 is, for example, an adhesive frame, which is disposed between the second lower surface 1022 of the upper cover 10 and the light guide plate 202, and both ends of the fastener 40 are attached to the upper cover 10 and the light guide plate 202 by acrylic adhesive. The fastener 40 can surround the anti-glare film 120 in one piece, or can surround the anti-glare film 120 in a plurality of separated parts. To be more specific, when SRF or TAC is selected for the anti-glare film 120, the thickness of the anti-glare film 120 is relatively thick, and the fastener 40 needs to select an adhesive frame having a certain thickness.

[0029] It is worth mentioning that the light guide plate 202 may further include a plurality of light guide structures disposed on its upper surface 202U, and the plurality of light guide structures overlap the first lower surface 1021 of the upper cover 10. The plurality of light guide structures may be recessed from the upper surface 202U toward the display panel 30, or may be protruded from the upper surface 202U toward the upper cover 10. Since there is no adhesive between the upper surface 202U of the light guide plate 202 and the first lower surface 1021 of the upper cover 10 for fixing, the adhesive will not change the light guide effect of the plurality of light guide structures. This allows the light guide effect of the light guide plate 202 and the anti-glare effect of the first lower surface 1021 of the upper cover 10 to be achieved simultaneously.

[0030] In order to describe various embodiments of the present invention in detail, other examples of the present invention are described below. Note that the following examples continue to use the part numbers and some contents of the previous examples, and the same part numbers are used to indicate the same or similar parts, and the description of the same technical contents is omitted. For the omitted parts, please refer to the previous examples, and the repeated description is omitted in the following examples.

[0031] Referring to Fig. 3, a schematic diagram of an anti-glare display device according to an embodiment of the present invention is shown. The anti-glare display device 4 includes an upper cover 10, a front light module 20, and a display panel 30, which are sequentially stacked, and also includes a fastener 40. The upper cover 10 includes a transparent substrate 100 and an anti-glare film 120, which is formed by applying a coating process to the transparent substrate 100. The difference between the embodiment of Fig. 3 and the embodiment of Fig. 2A is that the anti-glare film 120 in Fig. 3 is formed by applying a coating process to the transparent substrate 100, i.e., its thickness is thin, so the fastener 40 is not suitable as an adhesive frame. In this embodiment, the second lower surface 1022 of the transparent substrate 100 is recessed toward the second upper surface 1012, and an acrylic adhesive is selected as the fastener 40, which is filled between the second lower surface 1022 and the light guide plate 202 and optionally extends to the side surface of the transparent substrate 100, so as to more stably fasten the upper cover 10 and the light guide plate 202. To further explain, in the embodiment in which the first lower surface 1021 is an anti-glare surface formed by subjecting the transparent substrate 100 to a polishing process or a cutting process, the above-mentioned fastening method is applied.

[0032] Referring to FIG. 4, a schematic diagram of an anti-glare display device according to an embodiment of the present invention is shown. The anti-glare display device 5 includes an upper cover 10, a front light module 20, and a display panel 30, which are sequentially stacked. The upper cover 10 includes a transparent substrate 100 and an anti-glare film 120, which is formed by applying a coating process to the transparent substrate 100. The difference between the embodiment of FIG. 4 and the embodiment of FIG. 3 is that an acrylic adhesive as a fastener 40 is also disposed on one side of the light source 201, and the second lower surface 1022 of the transparent substrate 100 is not recessed toward the second upper surface 1012. To be more specific, in the embodiment in which the first lower surface 1021 is an anti-glare surface formed by applying a grinding process or a cutting process to the transparent substrate 100, the above-mentioned fastening manner is applied.

[0033] Referring to FIG. 5, a schematic diagram of an anti-glare display device according to an embodiment of the present invention is shown. The anti-glare display device 6 includes an upper cover 10, a front light module 20, and a display panel 30, which are sequentially stacked. The upper cover 10 includes a transparent substrate 100 and an anti-glare film 120, and the anti-glare film 120 is formed on the transparent substrate 100 through a coating process. The difference between the embodiment of FIG. 5 and the embodiment of FIG. 4 is that the acrylic adhesive as the fastener 40 is also disposed on one side of the light source 201 and one side of the display panel 30, and the second lower surface 1022 of the transparent substrate 100 is not recessed toward the second upper surface 1012. To be more specific, in the embodiment in which the first lower surface 1021 is an anti-glare surface formed on the transparent substrate 100 through a grinding process or a cutting process, the above-mentioned fastening manner is applied.

[0034] To sum up, the anti-glare display device of the embodiment of the present invention has at least one advantage: since both the upper and lower surfaces of the upper cover have anti-glare surfaces, and no adhesive exists in the display area between the upper cover and the light guide plate, the light guiding effect of the multiple light guiding structures arranged on the upper surface of the light guide plate is not affected, and the light guiding effect of the light guide plate and the anti-glare effect of the upper cover can be achieved simultaneously.

[0035] The above is merely a preferred embodiment of the present invention, and the scope of the present invention is not limited thereto. All simple equivalent changes and modifications based on the claims and the contents of the specification of the present invention are within the scope of the present invention. In addition, any one embodiment or claim of the present invention does not necessarily achieve all the objectives, advantages or features disclosed in the present invention. In addition, the abstract and the title of the invention are merely provided for patent document search, and do not limit the scope of the claims of the present invention. In addition, the terms "first", "second" and the like used in the present specification or claims are merely used to name elements or to distinguish different embodiments or scopes, and do not limit the upper or lower limits of the number of elements. [Explanation of symbols]

[0036] 1, 2: Display device 3, 4, 5, 6: Anti-glare display device 10, 10A, 10B: Top cover 20: Front light module 30: Display panel 40: Fixtures 50: Frame 100: Transparent substrate 120:Anti-glare film 201: Light source 202: Light guide plate 202U:Top surface 1011: 1st top surface 1021: 1st bottom surface 1012: 2nd top surface 1022: 2nd bottom surface A1, B1: Top surface A2, B2: Bottom side EL: Ambient light DR:Display area GL: Glare MS: Microstructure NDR: Hidden area IL: illumination light

Claims

1. There is a display area and a non-display area surrounding the display area, A display panel; A front light module including a light source for providing illumination light and a light guide plate located on a transmission path of the illumination light; an upper cover including, within the display area, a first upper surface located away from the light guide plate and a first lower surface located toward the light guide plate, the first upper surface and the first lower surface both being non-flat surfaces, the front light module being disposed between the display panel and the upper cover, and the first lower surface being in direct contact with the light guide plate; An anti-glare display device comprising:

2. 2. The anti-glare display device of claim 1, wherein the upper cover further comprises a second upper surface and a second lower surface within the non-display area, the second upper surface being located on the side of the upper cover away from the light guide plate and surrounding the first upper surface, and the second lower surface being located on the side of the upper cover toward the light guide plate and surrounding the first lower surface.

3. 3. The anti-glare display device according to claim 2, wherein the upper cover comprises a transparent substrate and an anti-glare film arranged in a stacked manner, the anti-glare film is located between the transparent substrate and the light guide plate, the first lower surface is located on the anti-glare film, and the second lower surface is located on the transparent substrate.

4. 4. The anti-glare display device according to claim 3, further comprising an adhesive layer, the anti-glare film being attached to the transparent substrate by the adhesive layer.

5. 3. The anti-glare display device according to claim 2, wherein the upper cover comprises a transparent substrate and an anti-glare film arranged in a stacked manner, the transparent substrate is located between the anti-glare film and the light guide plate, the first upper surface is located on the anti-glare film, and the second upper surface is located on the transparent substrate.

6. 6. The anti-glare display device according to claim 5, further comprising an adhesive layer, the anti-glare film being attached to the transparent substrate by the adhesive layer.

7. 2. The anti-glare display device according to claim 1, wherein the upper cover is a transparent substrate, the upper cover has a plurality of microstructures on a side facing the light guide plate, and the first lower surface is a structured surface including the plurality of microstructures.

8. 2. The anti-glare display device according to claim 1, wherein the top cover is a transparent substrate, the top cover has a plurality of micro-structures on a side thereof facing away from the light guide plate, and the first top surface is a structured surface including the plurality of optical micro-structures.

9. The anti-glare display device according to claim 2 , further comprising a plurality of fasteners disposed between the second lower surface and the light guide plate for fastening the upper cover and the light guide plate.

10. The anti-glare display device according to claim 1 , further comprising a plurality of fasteners, each fastener being disposed on a side surface of the upper cover and a side surface of the light guide plate to fasten the upper cover and the light guide plate.

11. 2 . The anti-glare display device according to claim 1 , wherein the light guide plate comprises a plurality of light guide structures, the plurality of light guide structures being disposed on a surface of the light guide plate facing the upper cover and overlapping the first lower surface.

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