TW201435439A - Display device - Google Patents

Abstract

A display device includes a light guide plate, a optical film set, a display panel, at least one drive IC and a light-reducing layer. The light film set is between the display panel and the light guide plate. The drive IC disposes on the side of the display panel. The light-reducing layer is between the light guide plate and drive IC. The light-reducing layer includes many light-reducing bodies. These bodies extend from the side closing the drive IC of the light-reducing bodies to the side going far away the drive IC of the light-reducing bodies.

Description

Display device

The present invention relates to a display device, and more particularly to an optical structure of a display device.

A liquid crystal display module of a Super Twisted Nematic (STN) or a Thin Film Transistor (TFT) has been widely used as a display device for a notebook personal computer or the like.

Taking a liquid crystal display module of a thin film transistor (TNT) as an example, these liquid crystal display modules generally include a liquid crystal display panel and a plurality of driving chips. These drive chips are disposed on the periphery of the liquid crystal display panel. Driving the output voltage of the wafer causes the liquid crystal in the display panel to be twisted, so that the liquid crystal display panel exhibits a change in color gradation and brightness.

Nowadays, a common method of driving a wafer on a liquid crystal display panel is to package a driver wafer on a liquid crystal display panel through an anisotropic conductive film (ACF), an ultraviolet glue or a silver paste. However, after the process of driving the chip package on the liquid crystal display panel, the liquid crystal display panel is warped and the light and dark distribution of the liquid crystal display module is uneven. Therefore, how to improve the uneven distribution of the liquid crystal display module will be the goal of the research and development personnel.

The present invention provides a display device for improving the brightness and darkness of a display device.

The display device disclosed in the present invention comprises a light guide plate, an optical film set, a display panel, at least one driving chip and a light reducing layer. The optical film set is interposed between the display panel and the light guide plate. The driving chip is disposed on one side of the display panel. The light reducing layer is interposed between the light guide plate and the driving wafer. The dimming layer includes a plurality of dimming bodies. The dimmers extend from a side of the adjacent drive wafer toward a first direction away from the drive wafer.

According to the display device disclosed in the above invention, the light-reducing layer is printed in an area adjacent to the driving wafer on any material between the driving wafer and the light guiding plate, and the light-reducing layer can reduce the brightness adjacent to the driving wafer, thereby improving the display device. The phenomenon of uneven brightness.

The above description of the present invention and the following description of the embodiments are intended to illustrate and explain the principles of the invention, and to provide a further explanation of the scope of the invention.

10‧‧‧ display device

100‧‧‧Frame

110‧‧‧ openings

200‧‧‧Light guide plate

300‧‧‧Optical diaphragm group

310‧‧‧Diffuse film

400‧‧‧ display panel

410‧‧‧First glass substrate

420‧‧‧Second glass substrate

430‧‧‧First Polarizer

440‧‧‧Second polarizer

450‧‧‧visible area

500‧‧‧Light source module

600‧‧‧Drive chip

600’‧‧‧Projection range

700‧‧‧Lightening layer

710‧‧‧Lighting body

Fig. 1 is a schematic cross-sectional view showing a display device according to a first embodiment of the present invention.

Fig. 2 is a schematic cross-sectional view showing the viewing device of Fig. 1 from another perspective.

Figure 3 is a schematic cross-sectional view of a display device in accordance with a second embodiment of the present invention Figure.

Fig. 4 is a schematic cross-sectional view showing a display device in accordance with a third embodiment of the present invention.

Fig. 5 is a schematic cross-sectional view showing a display device in accordance with a fourth embodiment of the present invention.

1 to 2, FIG. 1 is a schematic cross-sectional view of a display device according to a first embodiment of the present invention, and FIG. 2 is a cross-sectional view of the display device of FIG. 1 from another perspective.

The display device 10 of the present embodiment includes a frame 100, a light guide plate 200, an optical film set 300, a display panel 400, a light source module 500, at least one driving die 600, and a light reducing layer 700.

The frame 100 has an opening 110. The material of the frame 100 is, for example, metal or plastic.

The light guide plate 200 is disposed in the frame 100.

The optical film set 300 is disposed on the light guide plate 200. The optical film set 300 includes a diffusion sheet 310. The diffusion sheet 310 is used to increase the uniformity of light distribution.

The display panel 400 is disposed on the optical film set 300. That is, the optical film set 300 is interposed between the display panel 400 and the light guide plate 200. The display panel 400 includes a first glass substrate 410, a second glass substrate 420, a first polarizer 430, and a second polarizer 440. First glass substrate 410 stack It is provided on the second glass substrate 420. The second glass substrate 420 is closer to the light guide plate 200 than the first glass substrate 410. The first polarizer 430 is disposed on a side of the first glass substrate 410 away from the second glass substrate 420 , and the second polarizer 440 is disposed on a side of the second glass substrate 420 away from the first glass substrate 410 .

Further, the display panel 400 has a visible area 450. The visible area 450 is an area in which the display panel 400 displays a screen. The opening 110 exposes at least a portion of the viewable area 450.

The light source module 500 is disposed on one side of the light guide plate 200. The light source module emits light and projects the light onto the light guide plate 200. The light source module 500 of the present embodiment is a Cold Cathode Fluorescent Lamp (CCFL), but is not limited thereto. In other embodiments, the light source module 500 may also be a light emitting diode (Light emitting diode). Diode).

A driving chip 600 (Drive IC) is provided on one side of the display panel 400. In detail, the driving chip 600 is encapsulated on one side of the second glass substrate 420 through the encapsulant. The encapsulant of the present embodiment may be an anisotropic conductive film (ACF), an ultraviolet glue or a silver paste, and is not limited thereto.

The light reduction layer 700 is disposed between the driving wafer 600 and the light guide plate 200. For example, the light-reducing layer 700 of the present embodiment is disposed on the diffusion sheet 310 of the optical film set 300. The mode in which the dimming layer 700 is provided on the diffusion sheet 310 is, for example, printing. In addition, the drive wafer 600 is projected onto the dimming layer 700 to have a projection range 600'.

The light reduction layer 700 includes a plurality of light reduction bodies 710. These dimmers 710 extend from a side of the adjacent viewing area 450 of the projection range 600' of the drive wafer 600 toward a first direction (in the direction indicated by arrow a) away from the projection range 600' of the drive wafer 600. In other words, the light reducing body 710 extends from one side of the projection range 600' of the driving wafer 600 into the visible region 450.

As shown in Fig. 2, in the present embodiment, these light-reducing bodies 710 are distributed in a radial manner with the midpoint of one side of the projection range 600' of the driving wafer 600 as a distribution center. The distance between these light-reducing bodies 710 gradually increases in the first direction (in the direction indicated by the arrow a). The spacing d referred to herein is the distance maintained by the edges of adjacent dimmers 710. The diameters of the light-reducing bodies 710 are between 0.05 mm and 0.45 mm, and the diameter of the light-reducing body 710 is reduced in the first direction (in the direction indicated by the arrow a) to make the light-reducing bodies 710 The area gradually decreases in the first direction (in the direction indicated by the arrow a).

The light-reducing body 710 of the present embodiment has a white color and a light transmittance of 80% (%), but is not limited thereto. The light-reducing body 710 may also be other colors such as gray, blue or yellow. Further, the light transmittance of the light reducing body 710 may be any value less than 100% (%). That is to say, the light-reducing body 710 is not completely transparent and has no light-shielding effect. For example, the light transmittance of the light reducing body 710 is, for example, between 70% (%) and 90% (%).

The display device 10 may cause the second glass substrate 420 to flex after the packaging process of the driving wafer 600 is disposed on the second glass substrate 420, thereby causing unevenness of the display device 10 at a position adjacent to the driving wafer 600. The phenomenon (Chip on Glass MURA, COG MURA), and the closer to the driver chip 600, the more obvious the phenomenon of uneven brightness. Therefore, in the present embodiment, a plurality of large-area light-reducing bodies 710 are printed at a position where the diffusion sheet 310 is adjacent to the driving wafer 600, and the area of the light-reducing body 710 gradually changes as the distance from the driving wafer 600 increases. small. In this way, the phenomenon of light and dark unevenness of the display device 10 can be improved by the light blocking and dimming effects of the light reducing body 710.

The light-reducing bodies 710 of the above embodiment are distributed at a midpoint of one side of the projection range 600' of the driving wafer 600, and are distributed in a radial manner, but are not limited thereto. In practice, the distribution position of the display device 10 may be detected first, and then the distribution position of the light-reducing bodies 710 may be determined according to the phenomenon of uneven brightness. Please refer to FIG. 3, which is a cross-sectional view of a display device according to a second embodiment of the present invention. This embodiment is similar to the embodiment of Fig. 1 described above, and therefore only the differences will be described.

In the present embodiment, the light-reducing bodies 710 are distributed at the opposite ends of one side of the adjacent visible region 450 of the projection range 600' of the driving wafer 600 and are radially distributed. The distribution of the light-reducing body 710 of the present embodiment is mainly applicable to the case where the light-dark distribution phenomenon of the display device 10 appears on the left and right sides of the driving wafer 600. However, if the display device 10 exhibits a phenomenon of unevenness in light and darkness on one side of the driving wafer 600, the light-reducing body 710 may be printed at a position where the unevenness of light and darkness occurs.

The dimming layer 700 of the above embodiment is disposed on the diffusion sheet 310, but is not limited thereto. In other embodiments, the dimming layer 700 may also be disposed on the flooding layer 700. Any material between the movable wafer 600 and the light guide plate 200. Below are two examples. 4 and 5, FIG. 4 is a schematic cross-sectional view of a display device according to a third embodiment of the present invention, and FIG. 5 is a cross-sectional view of the display device according to a fourth embodiment of the present invention. As shown in FIG. 4, the light-reducing layer 700 of the present embodiment is disposed on the second polarizer 440 between the light guide plate 200 and the driving wafer 600. As shown in FIG. 5, the light-reducing layer 700 of the present embodiment is disposed on the second glass substrate 420 between the light guide plate 200 and the driving wafer 600. But it is not limited to this.

According to the display device disclosed in the above invention, the light-reducing layer is printed in an area adjacent to the driving wafer on any material between the driving wafer and the light guiding plate, and the light-reducing layer can reduce the brightness adjacent to the driving wafer, thereby improving the display device. The phenomenon of uneven brightness.

In addition, the distance between the light-reducing bodies is gradually increased as being away from the driving wafer, and the area of the light-reducing body is gradually smaller as being away from the driving wafer, so that the light passing amount of the light-reducing bodies closer to the driving wafer is reduced. The amount of light passing away from each of the light-reducing bodies of the driving chip is reduced to improve the unevenness of the display device.

Although the embodiments of the present invention are disclosed above, it is not intended to limit the present invention, and those skilled in the art, regardless of the spirit and scope of the present invention, the shapes, configurations, and features described in the scope of the present application. And the number of modifications may be made, and the scope of patent protection of the present invention shall be determined by the scope of the patent application attached to the specification.

10‧‧‧ display device

100‧‧‧Frame

110‧‧‧ openings

200‧‧‧Light guide plate

300‧‧‧Optical diaphragm group

310‧‧‧Diffuse film

400‧‧‧ display panel

410‧‧‧First glass substrate

420‧‧‧Second glass substrate

430‧‧‧First Polarizer

440‧‧‧Second polarizer

500‧‧‧Light source module

600‧‧‧Drive chip

700‧‧‧Lightening layer

710‧‧‧Lighting body

Claims (11)

A display device comprising: a light guide plate; an optical film set; a display panel, the optical film set is interposed between the display panel and the light guide plate; a light source module is disposed on a side of the light guide plate; At least one driving chip disposed on one side of the display panel; and a light reducing layer interposed between the light guiding plate and the driving wafer, the driving wafer being projected to the light reducing layer to have a projection range, the dimming The layer includes a plurality of light-reducing bodies extending from a side of the projection range of the drive wafer toward a first direction away from the projection range of the drive wafer. The display device according to claim 1, wherein the light-reducing bodies are distributed in a radial shape with the opposite ends of the same side of the projection range of the driving wafer. The display device according to claim 1, wherein the light-reducing bodies are distributed at a center of one side of the projection range of the driving wafer and are radially distributed. The display device of claim 1, 2 or 3, wherein the distance between the light-reducing bodies gradually increases along the first direction, and the areas of the light-reducing bodies gradually decrease along the first direction. The display device of claim 1, 2 or 3, wherein the dimming layer is provided in the Optical film set. The display device of claim 1, 2 or 3, wherein the optical film set further comprises a diffusion sheet facing the light guide plate, and the light reduction layer is disposed on the diffusion sheet. The display device of claim 1, 2 or 3, wherein the display panel comprises a first glass substrate and a second glass substrate, the first glass substrate is stacked on the second glass substrate, the second glass substrate The light-receiving plate is disposed closer to the light-guiding plate than the first glass substrate. The driving chip is electrically disposed on a side of the second glass substrate away from the light-guiding plate, and the light-reducing layer is disposed on the second glass substrate. The display device of claim 1, 2 or 3, wherein the display panel further comprises a first polarizer and a second polarizer, the first polarizer is stacked on the first glass substrate, and the second polarizer is The sheet is stacked on the second glass substrate, and the light reducing layer is disposed on the second polarizer. The display device of claim 1, 2 or 3, wherein the light transmittance of the light-reducing body is between 70% (%) and 90% (%). The display device of claim 1, 2 or 3, wherein the color of the light-reducing body is white. The display device of claim 1, 2 or 3, wherein the dimming bodies have a diameter of between 0.05 mm and 0.45 mm.