Display device

Abstract

The utility model discloses a display device which comprises a circuit board, a first light source assembly, a second light source assembly and a first extinction assembly. The first light source assembly is arranged above the circuit board and comprises a first light guide plate and a first light source which are adjacently arranged, and a first optical pattern is formed on the first light guide plate; the second light source assembly is stacked above the first light source assembly, the first light source assembly is arranged between the second light source assembly and the circuit board, the second light source assembly comprises a second light guide plate and a second light source which are adjacently arranged, and a second optical pattern is formed on the second light guide plate; the first extinction assembly is arranged between the circuit board and the first light guide plate or arranged between the first light source assembly and the second light guide plate, so that mutual light interference between the first light source assembly and the second light source assembly is avoided, the problem of shadow emerging of a plurality of optical patterns is solved, and the display effect of the display device is improved.

Description

Technical Field

[0001] This utility model relates to display technology, and in particular to a display device. Background Technology

[0002] With the rapid development of technology, display devices are increasingly being used in numerous electronic products. To achieve the effect of displaying different patterns, existing display devices typically employ multiple layers of light source components. Each of these components has a light source and a light guide plate, with different optical patterns formed on each light guide plate. By illuminating the light sources of different light source components at different times and in different usage scenarios, and by reflecting the light from the light sources through the corresponding optical patterns on the light guide plates, existing display devices can display different patterns.

[0003] However, in the existing display device structure, when the light guide plate of one of the light source components is lit, the stray light emitted by the light source component is easily scattered to the light guide plate of the adjacent light source component, thereby mistakenly lighting up the optical pattern of the light guide plate of the adjacent light source component. This causes the user to easily observe the afterimage of multiple display patterns when viewing, affecting the display effect of the display device.

[0004] Therefore, it is indeed necessary to propose better solutions to address the shortcomings of existing technologies. Utility Model Content

[0005] In view of the shortcomings of the prior art, the main objective of this utility model is to provide a display device that improves the display effect by setting an anti-reflection component to improve the problem of afterimages of displayed patterns.

[0006] To address the problems of the prior art, the present invention provides a technical solution in which the aforementioned display device comprises:

[0007] Circuit board;

[0008] A first light source assembly is disposed above the circuit board. The first light source assembly includes a first light guide plate and a first light source. The first light source is adjacent to the first light guide plate, and the first light guide plate has a first optical pattern formed on it.

[0009] The second light source assembly is stacked on top of the first light source assembly, and the first light source assembly is disposed between the second light source assembly and the circuit board. The second light source assembly includes a second light guide plate and a second light source, and the second light source is adjacent to the second light guide plate. The second light guide plate has a second optical pattern.

[0010] The first light-absorbing component is disposed between the circuit board and the first light guide plate.

[0011] Based on the above structure, this utility model provides the first light-absorbing component between the circuit board and the first light guide plate to avoid light interference between the first light source component and the second light source component, thereby improving the problem of afterimages of multiple display patterns and achieving the purpose of improving the display effect of the display device.

[0012] To address the problems of the prior art, another technical solution adopted by this utility model is to include the aforementioned display device as follows:

[0013] Circuit board;

[0014] A first light source assembly is disposed above the circuit board. The first light source assembly includes a first light guide plate and a first light source. The first light source is adjacent to the first light guide plate, and the first light guide plate has a first optical pattern formed on it.

[0015] The second light source assembly is stacked on top of the first light source assembly, and the first light source assembly is disposed between the second light source assembly and the circuit board. The second light source assembly includes a second light guide plate and a second light source, and the second light source is adjacent to the second light guide plate. The second light guide plate has a second optical pattern.

[0016] The first light-absorbing component is disposed between the first light source component and the second light guide plate.

[0017] Based on the above structure, this utility model provides a first light-absorbing component between the first light source component and the second light guide plate to avoid light interference between the first light source component and the second light source component, thereby improving the problem of afterimages of multiple display patterns and achieving the purpose of improving the display effect of the display device. Attached Figure Description

[0018] Figure 1 This is a perspective view of the first embodiment of the display device of this utility model;

[0019] Figure 2 This is an exploded view of the first embodiment of the display device of this utility model;

[0020] Figure 3 This is a cross-sectional view along line segment A-A' of the first embodiment of the present invention;

[0021] Figure 4 This is another cross-sectional view along line segment A-A' of the first embodiment of this utility model;

[0022] Figure 5 This is another sectional view along line segment A-A' of the first embodiment of this utility model;

[0023] Figure 6This is another sectional view along line segment A-A' of the first embodiment of the present invention;

[0024] Figure 7 This is yet another sectional view along line segment A-A' of the first embodiment of this utility model;

[0025] Figure 8 This is a second sectional view along line segment A-A' of the first embodiment of this utility model;

[0026] Figure 9 This is a cross-sectional view of a second embodiment of the display device of this utility model;

[0027] Figure 10 This is a cross-sectional view of a third embodiment of the display device of this utility model;

[0028] Figure 11 This is another cross-sectional view of the third embodiment of the display device of this utility model. Detailed Implementation

[0029] For a first embodiment of the display device 1 of this utility model, please refer to... Figures 1 to 3As shown, the system includes a circuit board 11, a first light source assembly 12, a second light source assembly 13, and a first light-absorbing assembly 14. The circuit board 11 provides the control signals required for the first light source assembly 12 and the second light source assembly 13 to emit light. The first light source assembly 12 is stacked on top of the circuit board 11 and includes a first light guide plate 121 and a first light source 122. The first light source 122 is disposed on one side of the circuit board 11 and adjacent to the first light guide plate 121. The first light source 122 receives the control signals from the circuit board 11, generates light based on the received control signals, and provides the light required by the first light guide plate 121 along a first direction X. The first light guide plate 121 has a first optical pattern 1211 formed thereon. The first light guide plate 121 reflects the light from the first light source 122 towards a second direction Y through the first optical pattern 1211 to display a display pattern. The first direction X is perpendicular to the second direction Y, and the second direction Y is parallel to the stacking direction of the circuit board 11, the first light source assembly 12, the second light source assembly 13, and the first light-absorbing assembly 14. The second light source assembly 13 is stacked above the first light source assembly 12, such that the first light source assembly 12 is located between the second light source assembly 13 and the circuit board 11. The second light source assembly 13 includes a second light guide plate 131 and a second light source 132. The second light guide plate 131 is stacked above the first light guide plate 121, and the second light source 132 is located on the other side of the circuit board 11 and adjacent to the second light guide plate 131. The second light source 132 is used to receive control signals from the circuit board 11, generate light based on the received control signals, and provide the light required by the second light guide plate 131 along a third direction Z. The third direction Z is perpendicular to the first direction X and the second direction Y. The second light guide plate 131 has a second optical pattern 1311 formed thereon. The second light guide plate 131 reflects the light from the second light source 132 in the second direction Y through the second optical pattern 1311 to display another display pattern. The first light-absorbing component 14 is disposed between the circuit board 11 and the first light guide plate 121. The first light-absorbing component 14 is used to absorb stray light emitted toward the circuit board 11.

[0030] For example, the first optical pattern 1211 and the second optical pattern 1311 can be formed on the surfaces of the first light guide plate 121 and the second light guide plate 131 respectively by stamping. The first optical pattern 1211 and the second optical pattern 1311 can each be composed of multiple concave microstructures. These microstructures can be arranged into specific patterns (e.g., English letters or numbers) according to design requirements to form the first optical pattern 1211 and the second optical pattern 1311 respectively.

[0031] With the above structure, a first light-absorbing component 14 is provided between the circuit board 11 and the first light guide plate 121, so that stray light emitted from the first light guide plate 121 toward the circuit board 11 can be absorbed by the first light-absorbing component 14, preventing stray light from being reflected and transmitted to the second light source component 13 through the first light guide plate 121, thereby preventing the first light source component 12 and the second light source component 13 from interfering with each other, improving the problem of afterimages of multiple display patterns, and enhancing the display effect of the display device.

[0032] For a detailed explanation of how the first matte component 14 is configured, please refer to [link to relevant documentation]. Figure 4 As shown. In this embodiment, the first matting component 14 includes a substrate 141 and a first matting layer 142. The substrate 141 is disposed between the circuit board 11 and the first light guide plate 121, and contacts the circuit board 11. The first matting layer 142 is disposed between the substrate 141 and the first light guide plate 121. The first matting layer 142 may be composed of black ink. It can be formed by printing or coating on the surface of the substrate 141 adjacent to the first light guide plate 121, allowing the first matting layer 142 to absorb stray light emitted from the first light guide plate 121, thus preventing stray light from the first light guide plate 121 from scattering to the second light source component 13. In this embodiment, the surface of the first matting layer 142 adjacent to the first light guide plate 121 can be roughened to achieve a matte finish. This design effectively reduces the reflectivity and gloss of the first matting layer 142, further improving the light absorption effect. For example, the reflectivity of the first matte layer 142 may be less than 10 percent, and the gloss of the first matte layer 142 may be less than 10 GU.

[0033] like Figures 2 to 4 As shown, in this embodiment, the first light source 122 and the second light source 132 can be respectively composed of a plurality of first light-emitting elements and a plurality of second light-emitting elements. The plurality of first light-emitting elements can be disposed on one side of the circuit board 11 along a third direction Z and arranged at intervals. The plurality of second light-emitting elements can be disposed on the other side of the circuit board 11 along a first direction X and arranged at intervals. For example, the first light-emitting elements and the second light-emitting elements can be light-emitting diodes (LEDs) or cold cathode fluorescent lamps (CCFLs), but are not limited thereto. Figure 3 and Figure 4 As shown, the circuit board 11 may be provided with a first solder layer 111 and a second solder layer 112 at positions corresponding to the first light source 122 and the second light source 132, respectively. The first light source 122 and the second light source 132 are fixedly disposed on the first solder layer 111 and the second solder layer 112, respectively, so as to form an electrical connection with the circuit board 11.

[0034] Furthermore, in this embodiment, the display device 1 of the present invention also includes a light-blocking element 15 and a cover plate 18. The light-blocking element 15 is disposed between the first light guide plate 121 and the second light source 132 to separate the first light guide plate 121 and the second light source 132, preventing light emitted by the second light source 132 from entering the first light guide plate 121. The cover plate 18 is disposed above the second light guide plate 131 and the second light source 132. For example, the material used for the light-blocking element 15 may include sponge, and the material used for the cover plate 18 may include glass, acrylic, acrylic plastic, acrylic plastic, acrylic material, acrylic sheet, or other transparent materials.

[0035] To further improve the absorption of stray light, please refer to Figure 2 and Figure 5 As shown. In this embodiment, the display device 1 of the present invention further includes a second light-absorbing component 16, which is disposed between the first light guide plate 121, the first light source 122 and the second light guide plate 131 of the first light source component 12.

[0036] By setting a second light-absorbing component 16 between the first light guide plate 121, the first light source 122, and the second light guide plate 131, stray light emitted from the first light guide plate 121 toward the second light guide plate 131, as well as stray light emitted from the second light guide plate 131 toward the first light guide plate 121, can be absorbed by the second light-absorbing component 16. This further avoids light interference between the first light source component 12 and the second light source component 13, thereby improving the display effect of the display device.

[0037] Please see Figure 6 As shown, in this embodiment, the second matting component 16 includes a first light-transmitting layer 161 and a second matting layer 162. The first light-transmitting layer 161 has opposing lower and upper surfaces in the second direction Y. The lower surface of the first light-transmitting layer 161 is adjacent to the first light guide plate 121, the first light source 122, and the light-blocking element 15. The upper surface of the first light-transmitting layer 161 is adjacent to the second light guide plate 131. The second matting layer 162 partially covers at least one of the lower and upper surfaces of the first light-transmitting layer 161. Furthermore, in this embodiment, the second matting layer 162 exposes at least one of the lower and upper surfaces of the first light-transmitting layer 161 to form a first light-transmitting area T1. For example, the first light-transmitting layer 161 may be made of a polyester film, while the second matting layer 162 may be made of black ink.

[0038] With the above structure, when there is only one layer of the second matting layer 162, a layer of the second matting layer 162 can be covered on the lower surface of the first light-transmitting layer 161, so that stray light emitted from the first light guide plate 121 toward the second light guide plate 131 can be absorbed by the second matting layer 162, thereby preventing stray light from being transmitted to the second light source assembly 13. Alternatively, a layer of the second matting layer 162 can be covered on the upper surface of the first light-transmitting layer 161, so that stray light emitted from the second light guide plate 131 toward the first light guide plate 121 can be absorbed by the second matting layer 162, thereby preventing stray light from being transmitted to the first light source assembly 12. When the second matting layer 162 has two layers, the lower and upper surfaces of the first light-transmitting layer 161 can be partially covered by the two layers of the second matting layer 162, so as to absorb the stray light emitted from the first light guide plate 121 and the second light guide plate 131 at the same time, avoid the first light source assembly 12 and the second light source assembly 13 from interfering with each other, and further improve the display effect of the display device.

[0039] like Figure 2 and Figure 6 As shown, the area of ​​the second matting layer 162 covering the lower surface and / or upper surface of the first light-transmitting layer 161 constitutes the first matting area A1. The uncovered portion of the lower surface and / or upper surface constitutes the first light-transmitting area T1. The first matting area A1 surrounds the first light-transmitting area T1. In this embodiment, the shape and position of the first light-transmitting area T1 match the shape and position of the first optical pattern 1211.

[0040] To further enhance the absorption of stray light, please refer to Figure 2 and Figure 7 As shown. In this embodiment, the display device 1 of the present invention further includes a third light-absorbing component 17, which is disposed above the second light guide plate 131 and the second light source 132, and a cover plate 18 is disposed above the third light-absorbing component 17.

[0041] By setting a third light-absorbing component 17 above the second light guide plate 131 and the second light source 132, stray light emitted from the second light guide plate 131 toward the cover plate 18, as well as stray light reflected by the cover plate 18, can be absorbed by the third light-absorbing component 17, further avoiding light interference between the first light source component 12 and the second light source component 13, and improving the display effect of the display device.

[0042] Please see Figure 8As shown, in this embodiment, the third matting component 17 includes a second light-transmitting layer 171 and a third matting layer 172. The second light-transmitting layer 171 has opposing lower and upper surfaces in the second direction Y. The lower surface of the second light-transmitting layer 171 is adjacent to the second light guide plate 131 and the second light source 132. The upper surface of the second light-transmitting layer 171 is adjacent to the cover plate 18. The third matting layer 172 partially covers at least one of the lower and upper surfaces of the second light-transmitting layer 171. Furthermore, in this embodiment, the third matting layer 172 exposes at least one of the lower and upper surfaces of the second light-transmitting layer 171 to form a second light-transmitting area T2. For example, the second light-transmitting layer 171 may be made of a polyester film, while the third matting layer 172 may be made of black ink.

[0043] With the above structure, when there is only one layer of the third matting layer 172, a layer of the third matting layer 172 can be partially covered on the lower surface of the second light-transmitting layer 171, so that stray light emitted from the second light guide plate 131 towards the cover plate 18 can be absorbed by the third matting layer 172, thereby preventing stray light from being reflected and transmitted to the first light source assembly 12. Alternatively, a layer of the third matting layer 172 can be partially covered on the upper surface of the second light-transmitting layer 171, so that stray light emitted from the second light guide plate 131 towards the cover plate 18 and reflected by the cover plate 18 can be absorbed by the third matting layer 172, thereby preventing stray light from being reflected and transmitted to the first light source assembly 12. When there are two layers of the third matting layer 172, two layers of the third matting layer 172 can be partially covered on both the lower and upper surfaces of the second light-transmitting layer 171, to further prevent light interference between the first light source assembly 12 and the second light source assembly 13, and improve the display effect of the display device.

[0044] like Figure 2 and Figure 8 As shown, in this embodiment, the area of ​​the third matting layer 172 covering the lower surface and / or upper surface of the second light-transmitting layer 171 constitutes the second matting area A2. The uncovered portion of the lower surface and / or upper surface constitutes the second light-transmitting area T2. The second matting area A2 surrounds the second light-transmitting area T2, and the second light-transmitting area T2 overlaps with the first light-transmitting area T1. In this embodiment, the shape and position of the second light-transmitting area T2 match the shape and position of the first optical pattern 1211 and the second optical pattern 1311. This arrangement allows light reflected by the first optical pattern 1211 to sequentially pass through the first light-transmitting area T1 and the second light-transmitting area T2 to display the display pattern. Light reflected by the second optical pattern 1311 can pass through the second light-transmitting area T2 to display the other display pattern.

[0045] Furthermore, in this embodiment, the surfaces of the second matte layer 162 and the third matte layer 172 can also be roughened to achieve a matte finish, thereby effectively reducing the reflectivity and gloss of the second matte layer 162 and the third matte layer 172, and further improving the light absorption effect. For example, the reflectivity of the second matte layer 162 and the third matte layer 172 can be less than 10%, and the gloss of the second matte layer 162 and the third matte layer 172 can be less than 10 GU.

[0046] For a second embodiment of the display device 1 of this utility model, please refer to [link / reference]. Figure 9 As shown, its main technical content is roughly the same as the first embodiment described above, except that the main technical difference is that the second light-absorbing component 16 forms a first light-transmitting opening 163, and the third light-absorbing component 17 forms a second light-transmitting opening 173.

[0047] In this embodiment, the first light-transmitting opening 163 is formed by penetrating the first light-transmitting layer 161 and the second matting layer 162. The second matting layer 162 of the second matting component 16 can completely cover at least one of the lower surface and the upper surface of the first light-transmitting layer 161. In this embodiment, the area formed by the first light-transmitting opening 163 constitutes the aforementioned first light-transmitting area T1, and the shape and position of the first light-transmitting opening 163 match the shape and position of the first optical pattern 1211.

[0048] In this embodiment, the second light-transmitting opening 173 is formed by penetrating the second light-transmitting layer 171 and the third light-absorbing layer 172. The third light-absorbing layer 172 of the third light-absorbing component 17 can completely cover at least one of the lower surface and the upper surface of the second light-transmitting layer 171. In this embodiment, the area formed by the second light-transmitting opening 173 constitutes the aforementioned second light-transmitting area T2, and the shape and position of the second light-transmitting opening 173 match the shape and position of the first optical pattern 1211 and the second optical pattern 1311.

[0049] For a third embodiment of the display device 1 of this utility model, please refer to... Figure 10 As shown, its main technical content is largely the same as the first embodiment described above, except that the main technical difference lies in the different placement of the first light-absorbing component 14. In this embodiment, the first light-absorbing component 14 is disposed between the first light guide plate 121, the first light source 122, and the second light guide plate 131 of the first light source component 12.

[0050] By setting a first light-absorbing component 14 between the first light guide plate 121, the first light source 122, and the second light guide plate 131, stray light emitted from the first light guide plate 121 toward the second light guide plate 131, and stray light emitted from the second light guide plate 131 toward the first light guide plate 121, can be absorbed by the first light-absorbing component 14. This avoids light interference between the first light source component 12 and the second light source component 13, improves the problem of afterimages of multiple display patterns, and enhances the display effect of the display device.

[0051] Please see Figure 11 As shown, in this embodiment, the first matting component 14 includes a light-transmitting substrate 141 and a first matting layer 142. The substrate 141 has opposing lower and upper surfaces in the second direction Y. The lower surface of the substrate 141 is adjacent to the first light guide plate 121, the first light source 122, and the light-blocking element 15. The upper surface of the substrate 141 is adjacent to the second light guide plate 131. The first matting layer 142 partially covers at least one of the lower and upper surfaces of the substrate 141. For example, the substrate 141 may be made of polyester film.

[0052] With the above structure, when there is only one layer of the first matting layer 142, it can be partially covered on the lower surface of the substrate 141 or partially covered on the upper surface of the substrate 141. This allows stray light emitted from the first light guide plate 121 toward the second light guide plate 131 and stray light emitted from the second light guide plate 131 toward the first light guide plate 121 to be absorbed by the first matting layer 142. When there are two layers of the first matting layer 142, both the lower and upper surfaces of the substrate 141 can be partially covered with two layers of the first matting layer 142 to simultaneously absorb stray light emitted from the first light guide plate 121 and the second light guide plate 131, preventing light interference between the first light source assembly 12 and the second light source assembly 13, and further improving the display effect of the display device.

[0053] In summary, this utility model improves the problem of afterimages of multiple display patterns and enhances the display effect of the display device by setting a first light-absorbing component between the circuit board and the first light guide plate, or between the first light source component and the second light guide plate, to avoid light interference between the first light source component and the second light source component.

Claims

1. A display device, characterized in that, The display device includes: Circuit board; A first light source assembly is disposed above the circuit board. The first light source assembly includes a first light guide plate and a first light source. The first light source is adjacent to the first light guide plate, and the first light guide plate has a first optical pattern formed on it. The second light source assembly is stacked on top of the first light source assembly, and the first light source assembly is disposed between the second light source assembly and the circuit board. The second light source assembly includes a second light guide plate and a second light source, and the second light source is adjacent to the second light guide plate. The second light guide plate has a second optical pattern. The first light-absorbing component is disposed between the circuit board and the first light guide plate.

2. The display device according to claim 1, characterized in that, The first matting component includes a substrate and a first matting layer. The substrate is disposed between the circuit board and the first light guide plate, and the first matting layer is disposed between the substrate and the first light guide plate.

3. The display device according to claim 1, characterized in that, The display device further includes: The second light-absorbing component is disposed between the first light source component and the second light guide plate.

4. The display device according to claim 3, characterized in that, The second matting component includes: The first light-transmitting layer has a lower surface and an upper surface that are opposite each other; A second matte layer covers at least one of the lower surface and the upper surface of the first translucent layer.

5. The display device according to claim 4, characterized in that, The second matte layer exposes at least one of the lower surface and the upper surface of the first light-transmitting layer to form a first light-transmitting area.

6. The display device according to claim 5, characterized in that, The shape and position of the first light-transmitting area match the shape and position of the first optical pattern.

7. The display device according to claim 3, characterized in that, The display device further includes a third light-absorbing component, which is disposed above the second light guide plate and the second light source.

8. The display device according to claim 7, characterized in that, The third matting component includes: The second light-transmitting layer has a lower surface and an upper surface that are opposite each other; A third matting layer covers at least one of the lower surface and the upper surface of the second light-transmitting layer.

9. The display device according to claim 8, characterized in that, The third matte layer exposes at least one of the lower surface and the upper surface of the second light-transmitting layer to form a second light-transmitting area.

10. The display device according to claim 9, characterized in that, The shape and position of the second light-transmitting area match the shape and position of the first optical pattern and the shape and position of the second optical pattern.

11. The display device according to claim 7, characterized in that, The second light-absorbing component has a first light-transmitting opening, and the third light-absorbing component has a second light-transmitting opening. The shape and position of the first light-transmitting opening match the shape and position of the first optical pattern, and the shape and position of the second light-transmitting opening match the shape and position of both the first and second optical patterns.

12. A display device, characterized in that, The display device includes: Circuit board; A first light source assembly is disposed above the circuit board. The first light source assembly includes a first light guide plate and a first light source. The first light source is adjacent to the first light guide plate, and the first light guide plate has a first optical pattern formed on it. The second light source assembly is stacked on top of the first light source assembly, and the first light source assembly is disposed between the second light source assembly and the circuit board. The second light source assembly includes a second light guide plate and a second light source, and the second light source is adjacent to the second light guide plate. The second light guide plate has a second optical pattern. The first light-absorbing component is disposed between the first light source component and the second light guide plate.

13. The display device according to claim 12, characterized in that, The first matting component includes: The substrate has a lower surface and an upper surface that are opposite each other; A first matte layer covers at least one of the lower surface and the upper surface of the substrate.

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