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Display device

A display device and display panel technology, which can be applied to instruments, nonlinear optics, optics, etc., can solve the problems of poor image quality and light leakage of display devices, and achieve the effect of preventing image quality from deteriorating and preventing light leakage.

Inactive Publication Date: 2016-12-14
SAKAI DISPLAY PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When light leaks occur, the displayed image quality will deteriorate
In particular, light leakage is prone to occur in narrow bezel display devices

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0034] figure 1 It is a perspective view of the display device of the present invention. The display device is, for example, a television. The display device includes a non-emissive display panel 2 in the shape of a rectangular plate. The display device 2 displays images from the backlight. The display device 2 is, for example, a liquid crystal panel. The peripheral portion and sides of the display device 2 are covered by the bezel 1 . The frame 1 is a frame-shaped metal member.

[0035] figure 2 is a schematic cross-sectional view of the display device. figure 2 The upper side corresponds to the front side of the display panel 2, and the lower side corresponds to the back side of the display panel 2. A substantially rectangular-shaped optical sheet 3 that diffuses and condenses light is disposed on the back of the display panel 2 . The optical sheet 3 is formed by laminating a plurality of sheets such as a sheet having a function of diffusing light and a sheet havin...

no. 2 approach

[0045] Figure 5 It is an explanatory diagram showing the state of assembly of the light shielding member 5 of the display device of the second embodiment. A schematic partial cross-sectional view showing an enlarged display device section end portion. In the second embodiment, although the shape of the light shielding member 5 is different from that of the first embodiment, other aspects are the same as those of the first embodiment. In the second embodiment, the shape of the light shielding member 5 is made close to the assembled shape. Such as Figure 5 As shown, the cross section of the light shielding member 5 is formed in a stepped shape. That is, the cross section of the light shielding member 5 is configured such that the outer frame portion 51 and the inner frame portion 52 each having a rectangular cross section are continuous, and the position of the inner frame portion 52 is shifted toward the back side than the outer frame portion 51 . The light-shielding memb...

no. 3 approach

[0051] Figure 6 It is an explanatory diagram showing the state of assembly of the light shielding member 5 of the display device according to the third embodiment. A schematic partial cross-sectional view showing an enlarged display device section end portion. In the third embodiment, although the shape of the light shielding member 5 is different from that of the first and second embodiments, the others are the same as those of the first and second embodiments. In the third embodiment, the outer frame portion 51 and the inner frame portion 52 of the light shielding member 5 each have a rectangular cross section, and the inner frame portion 52 is thinner than the outer frame portion 51 . exist Figure 6 Although an example is shown in which the front side surfaces of the outer frame portion 51 and the inner frame portion 52 are on the same plane, as long as the thickness of the inner frame portion 52 is thinner than that of the outer frame portion 51, the outer frame portio...

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PUM

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Abstract

Provided is a display device, which is provided with a direct backlight, and which is capable of reliably eliminating light leakage. In this display device, an optical sheet (3) is disposed between a display panel (2) and a direct light source (63), and a peripheral end section of the display panel (2) is supported by means of a frame-like inner chassis (supporting body) (4) from the rear surface side. A light blocking member (5) is disposed on the whole periphery of the peripheral end section of the display panel (2), said light blocking member being on the rear surface side, an outer frame section (51) of the light blocking member (5) is sandwiched between the display panel (2) and the inner chassis (4), and an inner frame section (52) of the light blocking member (5) is sandwiched between the display panel (2) and the optical sheet (3). Even if light that has passed through the optical sheet (3) travels toward the outside of a polarization plate (23), the light does not leak by being blocked by means of the light blocking member (5). Consequently, the light is prevented from being inputted to the peripheral end section of the display panel (2), and occurrence of light leakage is eliminated.

Description

technical field [0001] The present invention relates to a display device for displaying images using a direct-type backlight. Background technique [0002] A display device that displays images using a non-emissive display panel such as a liquid crystal panel includes a backlight that illuminates the display panel from behind. The backlight is divided into a direct-type backlight and a side-type backlight. The light source of the direct-type backlight is arranged behind the display panel, and the side-type backlight is configured with a light guide plate behind the display panel. The light sources are arranged with the end faces facing each other. Light from the backlight enters the rear surface of the display panel, and exits from the display surface on which an image is displayed. However, some light from the backlight may enter from the end surface of the display panel. At this time, the light incident from the end surface of the display panel is emitted from the perip...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1333G02F1/1335G02F1/13357
CPCG02F1/1333G02F1/1335G02F1/133308G02F1/133602G02F1/133317G02F1/133512G02F1/133528G02F1/133605G02F1/133606
Inventor 吉川贵博
Owner SAKAI DISPLAY PROD