TWI588551B - Front light board and design method thereof - Google Patents

Description

Front light plate and design method thereof

The invention relates to the field of light guiding plates, in particular to a light plate and a design method thereof, which are applied to a front light module, used with an optical film material and have excellent light-emitting uniformity effect.

The front light module is generally applied to a touch display, and a light source that is emitted downward is formed by a light guide plate in the module, and the bulk light source application is an e-book reading display or an electronic paper. application.

The front light module includes a light source and a light guide plate. The light source is disposed on the side of the light guide plate to provide incident light, and the light guide plate guides the incident light to form a downward light exiting manner, so that the front light module covers the display screen. It can then illuminate downwards and combine the front light module and the remaining electronic components through the bezel to form a display. In order to adjust the light-emitting state of the front light module, a common method is to use the light guide plate in combination with the optical film. For example, an optical film having a refractive index different from that of the light guide plate may be stacked on the side of the light-emitting surface of the corresponding light guide plate, so that the light that is directed toward the film in the light guide plate can be converted into downward traveling light to enhance the light-emitting efficiency, and to ensure The light guide plate guides the light downward, and the multilayer optical film can also be stacked in sequence. In addition, the optical film may have a columnar structure disposed at intervals to further enhance the light-emitting intensity of the high beam side region of the light guide plate by using the columnar structure gap. Or a functional material such as an anti-glare layer or a hard coating layer may be disposed on the light-emitting surface of the light guide plate, and the functional material layer and the light guide plate are fixedly bonded to each other through the adhesive layer to enhance the contrast effect of the display. The foregoing technical features can be referred to the disclosures of the Republic of China Patent No. I507747 and No. I518564.

However, when the film layer is stacked on the surface of the light guide plate, the refractive index of the film layer which is stacked outward from the light guide plate is gradually increased or decreased, and the light is affected by the film layer to change the light travel path, so that the light guide plate is formed when the light is actually emitted. The light-emitting surface generates bright and dark stripes in the visible area of the display device, thereby affecting the display performance and forming a phenomenon of uneven light. In order to eliminate the unevenness of the visible area, the inventors conceived a front light plate and a design method thereof to solve the defects in the use of the conventional light module.

An object of the present invention is to provide a front light panel and a design method thereof, which can eliminate the bright lines formed by the influence of the optical film stacking, prevent the display of bright and dark stripes, and improve the uniformity of the light output of the front light panel.

In order to achieve the above object, a front light panel disclosed in an embodiment of the present invention covers a display screen and is covered by at least one optical film having a light incident side, a light exiting surface and a bottom surface. The light-emitting surface and the bottom surface are respectively disposed adjacent to the light-incident side, and the light-incident side is configured to receive incident light of a light strip, wherein the front light panel has a first design area and a second design area. And the first design area and the second design area are sequentially adjacent to each other with the light incident side as a starting point, and the first design area includes a transition area and an adjustment area, the transition area and the adjustment area The light-incident side is sequentially disposed toward the second design area; the total length of the front light board is Y, and the lengths of the first design area and the second design area are D, the length of the adjustment zone is between D~ D, and satisfied Y D a relationship between Y; the dot is disposed on the light emitting surface or the bottom surface to provide a light extraction capability, and the light extraction capability of the adjustment zone is lower than the light extraction capability of the transition zone and the second design zone, wherein the mesh point The layout density of the second design area is X, and the dot layout density of the adjustment area is set to 5~70%X to eliminate the bright line formed by the stacking of the optical film when the front light plate is emitted. The front light plate is adjacent to the light-incident side region through a special dot distribution design, and the light-harvesting ability of the front light plate and the optical film stack can be improved by the light-removing ability of the adjustment region to improve the optical grade.

In an embodiment, it is disclosed that the layout density of the mesh point in the transition region is greater than the layout density of the mesh point in the second design region, so that the light extraction capability of the transition region is greater than the light extraction capability of the second design region. The front light plate can adjust the density of the dot distribution in the transition zone according to various needs. For the long light transition zone of the front light plate, or the intensity of the incident light and the transition zone when used with a different light source. Externally for the performance of the light distribution to ensure the light state of the front light board.

In another embodiment, the light bar has a plurality of first illumination sources and a plurality of second illumination sources, and the first illumination sources and the second illumination sources are staggered, and the transition region corresponds to the adjacent one. The light extraction capability of the region between the illumination source and the second illumination source is lower than the region of the transition region corresponding to each of the first illumination source and each of the second illumination sources. The front light plate is designed on the dot design. Different light sources have different optical characteristics compared with the front light plate, and the influence of the lighting source lighting timing on the front light plate is to adjust the light collecting capacity in the transition zone. The brightness of the front panel relative to the area between the light sources is reinforced to make the overall light incident uniform.

In another embodiment, it is disclosed that the preferred layout density of the network in the adjustment area is 8~50%X, which is a data prompt under the actual design of the product, and the bright line absorption is better in the range. efficacy.

Similarly, in an embodiment, the preferred length of the adjustment zone is D~ D, which is the same as the density of the above-mentioned network dots. After many experiments by the inventors, the range is a bright line in the area where the front light board is generated, and the adjustment area is set in the range to effectively improve uneven brightness and darkness. problem.

In one embodiment, the present invention also discloses a light panel design method prior to combining a plurality of optical films, comprising the steps of: providing a front light panel having a total length of Y, the front light panel having a light incident side, and depending on the light entrance side The first definition area includes a first design area and a second design area, and the first design area includes a transition area and an adjustment area, the transition area and the adjustment area are from the light entrance side to the second The design areas are sequentially arranged, and the lengths of the first design area and the second design area are D, the length of the adjustment zone is between D~ D, and meet Y D And a light-emitting surface or a bottom surface of the front light board, wherein the light-receiving capability of the adjustment area is lower than the light-receiving capability of the transition area and the second design area, when the network is in the The layout density of the second design area is X, and the layout density of the mesh point is set to 5~70%X, so as to eliminate the bright line formed by the stack of the optical film when the front light plate is emitted. According to the design method, the length and relative position of each region are defined before the front light plate, and the adjustment region mainly for absorbing the bright line of the optical film is set, and then the special dot density layout is used, based on the density of the second design region. Set the dot density of the adjustment zone, and repair the light-receiving ability of the adjustment zone, so that the generated bright line is eliminated, and the optical grade of the front plate is improved.

Based on the previous embodiment, the light source needs, such as the length of the current light plate transition zone, or when used with a light bar having multiple light sources, the layout density of the mesh point in the transition zone is greater than the mesh point in the second design. The density of the zone is set such that the light extraction capability of the transition zone is greater than the light extraction capability of the second design zone to uniformize the nature of the incident light.

Further, in an embodiment, the incident light is obtained by transmitting a light bar on the light incident side, and the light bar has a plurality of first light sources and a plurality of second light sources, the first light sources and the first When the two illumination sources are staggered, the transition region corresponds to the adjacent first illumination source And the light extraction capability of the second light source between the light source and the second light source is lower than the area of the first light source and the second light source, thereby reinforcing the brightness of the light source relative to the light source.

In yet another embodiment, the preferred layout density of the network in the adjustment area is 8~50%X, which is a data prompt under the actual design of the product. When the dot density is in this range, the system can obtain a comparison. Jiazhi bright line absorbs the effect.

And in the same manner, in an embodiment, the preferred length of the adjustment area is D~ D, which is the same as the density of the aforementioned dots, which is a bright line in the area where the front light plate is generated, and the adjustment area is set in the range to effectively improve the unevenness of light and dark.

In summary, the front light panel and the design method thereof disclosed by the present invention are effective to eliminate the bright lines generated when the optical film is used, through the special light-taking capability layout adjacent to the light-incident side region, thereby improving the overall Light output and optical grade. The adjustment of the light-receiving ability is based on the dot density in each area. The light-receiving ability of the adjustment zone is used to absorb the excessive energy brought by the bright line, and the overall brightness of the front panel is averaged to avoid the bright and dark caused by the bright line. Striped visual presentation. At the same time, according to the environmental conditions and the light-emitting requirements of the front panel, the relationship between the dot density of the transition zone and the second design zone can be further adjusted, the light-receiving capability of the transition zone is improved, and the location of the network dot is adjusted to meet various needs.

1‧‧‧front plate

10‧‧‧light side

11‧‧‧Glossy

12‧‧‧ bottom

13‧‧‧First Design District

131‧‧‧Transition zone

132‧‧‧Adjustment area

14‧‧‧Second Design Area

15‧‧‧ outlets

2‧‧‧Display

3‧‧‧Optical film

4‧‧‧Light strips

40‧‧‧First light source

41‧‧‧second source of illumination

Y‧‧‧ total length of the light board

D‧‧‧The length of the first design area

D‧‧‧ Length of the second design area

S01~S02‧‧‧Steps

Fig. 1 is a plan view showing a first embodiment of the present invention.

Fig. 2 is a partially enlarged schematic view showing the first embodiment of the present invention.

Fig. 3 is a schematic view showing the application of the first embodiment of the present invention.

Figure 4 is a plan view showing a second embodiment of the present invention.

Fig. 5 is a schematic view showing the design of each of the front light plates according to the second embodiment of the present invention.

Figure 6 is a plan view showing a third embodiment of the present invention.

Figure 7 is a flow chart showing the steps of the fourth embodiment of the present invention.

In order to eliminate the bright lines formed in the visible area of the display when the front light module is activated, the inventors designed the light extraction capability distribution of the front light plate to adjust the uniformity and brightness of the light, and effectively eliminate the brightness when used. line. Please refer to Figures 1, 2 and 3, which are schematic plan views, partial enlarged views and application schematics of the first embodiment of the present invention. The invention discloses a front light plate 1 which is covered by a display screen 2 and covered by at least one optical film 3, wherein the optical film material 3 is used for adjusting the light-emitting effect of the front light plate 1 or applying the light-emitting plate 1 The display screen 2 shows the performance, and the refractive index of the optical film 3 is different from that of the front light plate 1. The front light panel 1 has a light incident side 10, a light exiting surface 11 and a bottom surface 12. The light exiting surface 11 and the bottom surface 12 are respectively adjacent to the light side 10 and oppositely disposed, and the light incident side 10 is configured to receive the incident light of the light strip 4. Light.

The light panel 1 of the present invention is characterized in that it has a first design area 13 , a second design area 14 and a half point 15 . The first design area 13 and the second design area 14 are arranged adjacent to each other with the light incident side 10 as a starting point. The first design area 13 further includes a transition area 131 and an adjustment area 132. The transition area 131 and the adjustment area 132 are sequentially disposed from the light incident side 10 toward the second design area 14, and the total length of the front light panel 1 is Y, the lengths of the first design area 13 and the second design area 14 are D, the length of the adjustment area 132 is between D~ D, and satisfied Y D The relationship of Y. In this case, the arrangement order and position of each region in the front light panel 1 are first defined to facilitate setting and adjusting the density of the dots 15 . Wherein, when the front panel 1 is used for the display screen 2, the industry generally refers to the area outside the transition area 131 as a visible area for the user to view, that is, the area extending from the boundary of the transition area 131 toward the light entrance side 10, The area 131 generally refers to the position of the assembled frame and is covered by the frame, and preferably the length is smaller than D.

The dot 15 is disposed on the light exit surface 11 or the bottom surface 12 to provide light extraction capability, and the light extraction capability of the adjustment area 132 is lower than that of the transition area 131 and the second design area 14, and when the dot 15 is in the second design area. When the density of the 14 is set to X, the dot 15 of the adjustment area 132 is disposed with a density of 5 to 70% X to eliminate the bright line formed by the deposition of the optical film 3 when the front light plate 1 emits light. In the present embodiment, For example, the outlet 15 is disposed on the light exit surface 11 as an example. After setting the position and length of each zone, the light-receiving ability of each zone is adjusted by the difference in density of the dots 15 to eliminate the bright line generated by the change of the refractive index of the optical film 3, that is, the averaging front plate 1 light intensity and uniformity. The front light panel 1 is not the light-emitting surface 11 or the bottom surface 12 of the first design area 13 and the second design area 14, and may be further provided with a dot 15 which is close to far from the light-incident side 10 and is dense and dense. The other areas of the front light plate 1 are uniformly arranged with a reasonable light output, as shown in Fig. 1. In fact, the layout density of the mesh 15 in the whole of the front light plate 1 can be drawn as a continuous curve, but it is obvious in the figure to highlight the technical features of the present invention and to facilitate the display of the difference between the dots 15 of each area. The difference in density distribution is illustrated by an example.

Prior to the present invention, the light panel 1 is first defined with the light incident side 10 as a starting point and covers a length of Y~ The area of Y is an area mainly designed for the dot 15 . After the front light plate 1 is covered with the optical film 3, the light exiting path is affected by the refractive index change, so that the bright line originally formed in the transition region 131 is shifted to the visible area, thereby reducing the display performance. Therefore, the present invention starts from the light incident side 10 of the front light panel 1 Y~ In the Y length region, the first design area 13 is defined, and in order to conform to the practical application and eliminate the bright line, the transition area 131 and the adjustment area 132 are further distinguished in the first design area 13, and the adjustment area 132 is located in the transition area 131. The boundary between the boundary and the boundary of the first design area 13 and the multiple layout plan of the mesh 15 effectively solve the display problem caused by the offset bright line. The dot 15 in the second design area 14 is such that the area can be uniformly lighted, and the area of the adjustment area 132 and the front light board 1 not belonging to the first design area 13 and the second design area 14 is the second design area 14 The dot 15 is arranged to have a density as a basis for designing, so that the light-receiving ability of the adjustment zone 132 is lower than that of the transition zone 131 and the second design zone 14 to absorb the light-receiving capability of the lower repair due to the optical film 3 The bright line displacement phenomenon, and the other areas of the front light plate 1 evenly emit light. In particular, the density of the dots 15 in the adjustment zone 132 cannot be zero, avoiding the counter effect and making the bright line more visible. If the density of the dots 15 of the adjustment area 132 is less than 5% X or higher than 70% X, the adjustment area 132 may not be able to accurately improve the bright line because the number of the dots 15 is too small or the density of the dots 15 of the second design area 14 is too close. The optical interference caused by the poor display of bright and dark stripes is still quite obvious.

3 shows a state in which the front light panel 1 is covered by the display screen 2. The display screen 2 can be a common electrophoretic display panel. In the present embodiment, the optical film 3 is provided in plural and covers the front light panel 1 The light exit surface 11 is taken as an example. In addition, a light transmissive plate or a touch panel or the like may be mounted on the bottom surface 12 of the front light plate 1. When the light bar 4 is lit and the light enters the front light plate 1 from the light entering side 10, the bright line originally formed in the transition region 131 is offset to the non-transitional region in the first design area 13 after being affected by the optical film 3. The range of 131 affects the uniformity of light output and the display performance, and the low light extraction capability of the adjustment area 132 can effectively eliminate the bright lines, so that the front light plate 1 exhibits uniform light output.

Please refer to FIGS. 4 and 5 , which are schematic plan views of the second embodiment of the present invention and a schematic design diagram of each of the front light plates. Since the transition area 131 is an area for actually setting the frame when the display screen 2 is used, the length of the transition area 131 is longer when the corresponding frame condition is met. Or in the case that the light bar 4 used in combination with the front light plate 1 has two or more different light sources, the density of the dots 15 in the transition region 131 can be made larger than the density of the dots 15 in the second design region 14 The light extraction capability of the transition zone 131 is greater than the light extraction capability of the second design zone 14 to enhance the light extraction intensity of the adjacent light entrance side 10 by the density of the transition zone 131, and to improve and reinforce the problem of insufficient brightness and unevenness.

According to the length relationship and setting sequence of each of the foregoing regions, and the limitation of the layout density of the adjustment area 132 and the layout density of the second design area 14 , the fifth design provides the front design 1 in the first design area 13 and the second design. In the coverage area of area 14, the design curve drawn by the different area setting length and the dot 15 layout density design is shown. In the fifth figure, the design curves of the six groups of data of A~F are represented by different lines, and the X-axis represents The distance between the light-incident side 10 and the Y-axis indicate the density of the dots 15 are arranged. After the experiments of the front light plates 1 in FIG. 5, the displacement light of the optical film can be effectively absorbed by the adjustment region 132. Taking the light plate 1 as an example before the total length Y is 120 mm, take D= Y=20mm, so that the first design area 13 and the second design area 14 have a length of 10 mm, and the transition area 131 has a length of about 2 mm, and the preferred length of the adjustment area 132 is captured. D~ D, that is, about 3 mm to 4 mm, and the density of the preferred dot 15 of the adjustment zone 132 is set to 8 to 50% X. Taking the data of the figure as an example, when the density X of the dot 15 in the second design zone 14 is 0.06. The density of the adjustment area 132 is about 0.005 to 0.03, that is, 8 to 50% X as described above. In addition, it can also be seen that the dot 15 of the transition zone 131 is disposed with a density greater than the dot 15 of the second design zone 14 to increase the light extraction capability of the zone to enhance the brightness. In the range of the length of the adjustment zone 132 and the density of the adjustment zone 132, the effect of eliminating the bright line of the front light plate 1 is better, and a better light presentation can be obtained.

Please refer to FIG. 6, which is a plan view of a third embodiment of the present invention. As the user's demand increases, the display frame applied to the front panel 1 is gradually narrower, so that the visible area is relatively enlarged, and the display area is large. Moreover, in practical applications, the light bar 4 or the different driving conditions, for example, the light sources of the light bar 4 are illuminated at different timings, or the light bar 4 has a plurality of different light sources, etc., and the transition zone 131 The dot 15 design determines the available light and light output of other areas of the front panel 1. In the case where the width of the frame is reduced, that is, the length of the transition region 131 of the front plate 1 is reduced, and the light of the light bar 4 is changed, the layout of the dots 15 of the transition region 131 can be used for the rest of the design. The uneven distribution of light and dark in the transition zone 131 is reduced, that is, a hot spot phenomenon. The embodiment of the present invention discloses that the light bar 4 has a plurality of first light source 40 and a plurality of second light sources 41, and the first light source 40 and the second light source 41 are staggered, and the transition area 131 corresponds to the first one. The light extraction capability of the region between the light source 40 and the second light source 41 is lower than the region of the transition region 131 corresponding to each of the first light source 40 and each of the second light sources 41. The first light source 40 and the second light source 41 are exemplified by LEDs having different color temperatures, and the first light source 40 and the second light source 41 can be illuminated at different timings. The light intensity of the region between the first light source 40 and the second light source 41 can be reinforced by the light-receiving capability, so that the light in the transition region 131 is more uniform and the frame is relatively reduced. Cover the area to achieve the purpose of expanding the visible area. Since the density of the dots 15 is higher, the light-receiving capability is increased. The density of the dots 15 can be set based on the density of the dots 15 . As shown in this embodiment, the dots 15 located in the transition region 131 are corresponding. An area disposed between the adjacent first light source 40 and the second light source 41, such that the light extraction capability is higher than the transition area 131 facing the first light source 40 and the second light source 41, but the implementation The layout of the mesh 15 is only a better illustration.

Please refer to FIGS. 1~3 and 7 for the fourth embodiment of the present invention. Step flow chart. In the present embodiment, the present invention discloses a light panel design method prior to combining a plurality of optical films to effectively solve the application, the optical film 3 is stacked and shifted to a bright line of the visible area of the front light plate 1 , and the front light plate design method Contains the following steps.

First, a front light panel 1 having a total length Y is provided, the front light panel 1 has a light incident side 10, and one of the first design area 13 and the second design area 14 is adjacently defined by the light entrance side 10. The first design area 13 includes a transition area 131 and an adjustment area 132. The transition area 131 and the adjustment area 132 are sequentially disposed from the light entrance side 10 toward the second design area 14, the first design area 13 and the second design. The length of the area 14 is D, the length of the adjustment area 132 is between D~ D, and meet Y D The relational expression of Y (step S01). In the design, each area is defined before the light board 1 before the length Y, and the design of the light-receiving ability for each area is facilitated. Among them, in response to the light-emitting requirements of different regions and the performance in actual application, when designing the light-receiving capacity distribution of the front light plate 1, the first design area 13 is first defined, and the transition area is further divided in the first design area 13. 131 and the adjustment area 132, the transition area 131 generally refers to the frame shielding area of the front light board 1 combined with the display screen 2, the length of which is equivalent to the length of the frame, and the bright line caused by the stacking of the optical film 3 of the front light board 1 is displaced to Adjacent to the transition zone 131, that is, the adjustment zone 132 defined by the front panel 1. The second design area 14 can continue the remaining area of the front light panel 1 and form a uniform light output.

Next, a dot 15 is disposed on one of the light-emitting surface 11 or the bottom surface 12 of the front light plate 1 to make the light-receiving capability of the adjustment area 132 lower than the light-receiving capability of the transition area 131 and the second design area 14 when the dot 15 is in the second The design area 14 is disposed with a density X, and the layout density of the halftone dots 15 in the adjustment area 132 is 5 to 70% X (step S02) to eliminate the brightening of the front light plate 1 by the optical film 3 when it is emitted. line. After the front panel 1 defines the order and length of each area, The dot 15 can be disposed at the light exit surface 11 or the bottom surface 12, and the light extraction capability of the adjustment area 132 can be lowered to allow the bright line to be absorbed by the area. The method of repairing is based on the layout density X of the half point 15 in the second design area 14, and the density of the dots 15 in the adjustment area 132 is set to be 5 to 70% X. By designing the density of the specially distributed dots 15 on the front light plate 1, the light extraction capability of each region is adjusted, and the refractive index change caused by the accumulation of the optical film 3 on the front light plate 1 is eliminated, resulting in the displacement of the bright line to the visible region. In the design of the dot 15 density, the front panel 1 first plans the layout of each length and arrangement order, and then distributes the different dots 15 in the regions to make the front panel 1 have a uniform light-emitting effect. In turn, the display performance is improved.

The light plate 1 can be further designed by the front plate design method. As shown in FIG. 4, the density of the dots 15 in the transition region 131 can be made larger than the dots 15 in the second design region 14 based on various light-emitting requirements or application environmental conditions. The density is set so that the light extraction capability of the transition zone 131 is greater than the light extraction capability of the second design zone 14, so that the light plate 1 has a longer transition zone 131 or a combination of two or more illumination sources, and the density of the transition zone 131 is high. The light extraction intensity of the area adjacent to the light incident side 10 is raised.

The preferred layout density of the dot 15 in the adjustment area 132 is 8 to 50% X, and the preferred length of the adjustment area 132 is D~ D, this range of conditions can refer to the design curve distribution data suggested in FIG. 5, and the optical board 1 is optically tested before each condition, and the light-receiving ability of the front light-plate 1 can be effectively absorbed through the adjustment area 132 to effectively absorb the 肇A bright line that is offset to the visible area due to the accumulation of the optical film. And in this range, the front light plate 1 can more accurately eliminate the bright line phenomenon, and obtain a better light-emitting effect.

In addition, as shown in FIG. 6, one of the light bars 4 used in the current light panel 1 has a plurality of first light source 40 and a plurality of second light sources 41, and the first light source 40 and the second light source When the light source 41 is staggered, the transition region 131 corresponds to the light extraction capability of the region between the adjacent first light source 40 and the second light source 41, and is lower than the first light source 40 and the second light corresponding to the transition region 131. In the region of the source 41, for example, the dots 15 located in the transition region 131 can be disposed between the adjacent first light source 40 and the second light source 41. Thereby, the area of the hot spot phenomenon generated by the area adjacent to the transition zone 131 is reduced. In short, the light intensity of the dark area in the transition zone 131 can be complemented by the layout of the dot 15 to homogenize the light entering the light side 10, so that the front light plate 1 achieves a uniform light output effect and further reduces the width of the frame.

In summary, the present invention discloses a light panel and a design method thereof, which can effectively solve the phenomenon of bright line offset generated by the light board before combining at least one optical film material, thereby improving the display performance of the front light board when the display screen is mounted, and providing more High optical quality. Starting from the light entrance side, through the special dot distribution of the front section of the front panel, the area under which the light extraction capability is repaired can be shifted to the bright line for the user to view the area. The first design area and the second design area are sequentially defined on the front panel, and the transition area and the adjustment area are further divided in the first design area, and the light extraction capability of the adjustment area is lower than the transition area and the second design area. The way to reduce the light-receiving ability of the adjustment zone is to limit the density of the dot layout to 5 to 70% of the density X of the layout of the second design zone. Further, in accordance with different light-emitting requirements and environmental conditions, the layout density of the dots in the transition zone may be greater than the layout density of the second design zone to homogenize the brightness of the light in the transition zone, and the light properties incident on the front plate are consistent. . In addition, the height of the light extraction capability in the transition zone can be adjusted to enhance the light intensity of the front panel relative to the region between the light sources.

However, the above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention; therefore, equivalent changes and modifications may be made without departing from the spirit and scope of the invention. Within the scope of the patent of the present invention.

1‧‧‧front plate

10‧‧‧light side

11‧‧‧Glossy

13‧‧‧First Design District

131‧‧‧Transition zone

132‧‧‧Adjustment area

14‧‧‧Second Design Area

15‧‧‧ outlets

Y‧‧‧ total length of the light board

D‧‧‧The length of the first design area

D‧‧‧ Length of the second design area

Claims (10)

a front light plate for covering a display screen and covered by at least one optical film, the front light plate having a light incident side, a light exiting surface and a bottom surface, wherein the light emitting surface and the bottom surface are respectively adjacent to the light incident side and The light-incident side is configured to receive incident light of a light bar, wherein the front light plate has a first design area, a second design area and a mesh point, and the first design area and the second design The first design area includes a transition area and an adjustment area, and the transition area and the adjustment area are sequentially set by the light entrance side toward the second design area. The total length of the front panel is Y, and the lengths of the first design area and the second design area are D, the length of the adjustment zone is between D~ D, and satisfied Y D a relationship between Y; the dot is disposed on the light emitting surface or the bottom surface to provide a light extraction capability, and the light extraction capability of the adjustment zone is lower than the light extraction capability of the transition zone and the second design zone, wherein the mesh point The layout density of the second design area is X, and the dot layout density of the adjustment area is set to 5~70%X to eliminate the bright line formed by the stacking of the optical film when the front light plate is emitted. The light plate of the first aspect of the patent application, wherein the layout density of the mesh point in the transition zone is greater than the layout density of the mesh point in the second design zone, so that the light extraction capability of the transition zone is greater than the second design zone. The ability to take light. The light panel of claim 1 or 2, wherein the light strip has a plurality of first light source and a plurality of second light sources, and the first light source and the second light source are staggered. The transition region corresponds to a light extraction capability of the adjacent first light source and the second light source, and is lower than a region of the transition region corresponding to each of the first light source and each of the second light sources. For example, the light panel mentioned in the first aspect of the patent application, wherein the network is preferably in the adjustment area. The density of the layout is 8~50%X. The light plate of the first aspect of the patent application, wherein the preferred length of the adjustment zone is D~ D. A method for designing a light plate in combination with a plurality of optical films, comprising the steps of: providing a front light plate having a total length Y, the front light plate having a light incident side, and sequentially defining one of the adjacent settings from the light entrance side a design area and a second design area, and the first design area includes a transition area and an adjustment area, the transition area and the adjustment area are sequentially disposed from the light incident side toward the second design area, and the first The length of a design area and the second design area are D, the length of the adjustment zone is between D~ D, and meet Y D And a light-emitting surface or a bottom surface of the front light board, wherein the light-receiving capability of the adjustment area is lower than the light-receiving capability of the transition area and the second design area, when the network is in the The layout density of the second design area is X, and the layout density of the mesh point is set to 5~70%X, so as to eliminate the bright line formed by the stack of the optical film when the front light plate is emitted. The method for designing a light plate in combination with a plurality of optical films according to claim 6, wherein a density of the dots in the transition region is greater than a density of the dots in the second design region, so that the transition region is taken. The light capability is greater than the light extraction capability of the second design zone. The light panel design method of combining a plurality of optical film materials according to claim 6 or 7, wherein the light incident side is transmitted through a light bar on the light incident side, and the light bar has a plurality of first light source and a plurality of a second illumination source, the first illumination source and the second illumination source are staggered, and the transition region corresponds to a light extraction capability of the adjacent first illumination source and the second illumination source region, which is lower than the The transition zone corresponds to a region of each of the first illumination sources and each of the second illumination sources. The method for designing a light plate before combining a plurality of optical films according to claim 6 of the patent application scope, The preferred layout density of the mesh in the adjustment zone is 8~50%X. The method for designing a light plate before combining a plurality of optical films according to claim 6, wherein the preferred length of the adjustment zone is D~ D.