CN102305982A - Liquid crystal display device - Google Patents

Abstract

The invention provides a liquid crystal display device, comprising: panel, light guide plate, optical film, gluey frame and frame. Wherein, the light guide plate is positioned below the panel; the optical membrane is positioned between the panel and the light guide plate, and a lug is arranged on one side edge of the optical membrane; the rubber frame is provided with a first retaining wall and a second retaining wall which are perpendicular to each other, the panel is erected on the second retaining wall, an opening is formed in the second retaining wall corresponding to the lug, and the second retaining wall is divided into a third retaining wall and a fourth retaining wall by the opening; the light absorption structure is attached to the side wall, perpendicular to the optical membrane, of the third blocking wall and covers a gap left when the lug is inserted into the opening; and the outer frame is provided with an accommodating space. The liquid crystal display device can avoid the problem of light leakage when the outer frame is not enlarged.

Description

A liquid crystal display device

technical field

The invention relates to a liquid crystal display device, in particular to a liquid crystal display device which avoids light leakage.

Background technique

Most of the current notebook computers (Note Book, abbreviated as NB) are designed with a viewing angle of 20° up and down and 40° left and right. However, in recent years, information products with lightness, thinness, shortness and small portability have attracted quite a lot of attention, and tablet computers are a new trend. Since the tablet computer has a full viewing angle, the application of 85° from top to bottom, from left to right, requires perfect quality without light leakage regardless of any viewing angle. Glass, keep the viewing area as far away from the edge of the glass as possible. Based on the analysis of the light path, the angle of view is changed from 20-40 degrees to 85 degrees. Taking 10.1 inches as an example, the outer frame needs to be increased by at least 6-7mm in the upper, lower, left, and right sides. Such a solution will increase the weight and area, and cannot To achieve a thin and short design. If only the light guide plate and the optical film are increased without enlarging the outer frame, the plastic frame will shrink, and its fixing strength will decrease.

In view of this, how to design a new type of liquid crystal display device, under the premise of not increasing the outer frame, the plastic frame also has a strong fixing force, and can avoid light leakage is a problem that technicians in the industry need to solve urgently .

Contents of the invention

Aiming at the defects in the prior art that the plastic frame becomes thinner and the strength is weakened in order to achieve no light leakage at all viewing angles without enlarging the outer frame, the present invention provides a liquid crystal display device.

According to the present invention, the present invention provides a liquid crystal display device, including: a panel, a light guide plate, an optical film, a plastic frame and an outer frame. Wherein, the light guide plate is located below the panel; the optical film is located between the panel and the light guide plate, and a protruding ear is provided on one side of the optical film; the plastic frame has a first retaining wall and a second retaining wall perpendicular to each other, The panel is erected on the second retaining wall, and the second retaining wall is provided with an opening corresponding to the lug, and the opening divides the second retaining wall into a third retaining wall and a fourth retaining wall; the light-absorbing structure is attached to the third retaining wall vertically It is on the side wall of the optical film and covers the gap left when the lug is inserted into the opening; and the outer frame has a receiving space.

Preferably, the panel is a liquid crystal panel.

Preferably, an upper polarizer and a lower polarizer are further included, and the panel is sandwiched between the upper and lower polarizers.

Preferably, the light-absorbing substance can be made of adhesive tape, rubber or ink.

Preferably, the outer frame can be an iron frame or a plastic frame.

Preferably, a light source is further included.

Preferably, the light source can be a light emitting diode.

Preferably, the outer frame further includes a first outer frame and a second outer frame, the first outer frame and the second outer frame form an accommodating space, and the first outer frame and the second outer frame partially overlap.

Preferably, the optical film flat includes a diffuser sheet, a brightness enhancement film or a prism sheet.

By adopting the liquid crystal display device of the present invention, the strength of the plastic frame can be enhanced and the problem of light leakage can be avoided without enlarging the outer frame.

Description of drawings

Readers will have a clearer understanding of various aspects of the present invention after reading the detailed description of the present invention with reference to the accompanying drawings. in,

FIG. 1 shows a schematic cross-sectional view of a liquid crystal display device according to the present invention.

Detailed ways

The specific implementation manners of the present invention will be described in further detail below with reference to the accompanying drawings.

FIG. 1 shows a schematic cross-sectional view of a liquid crystal display device according to the present invention. Referring to FIG. 1 , the liquid crystal display device 10 includes: a liquid crystal panel 100 , a light guide plate 110 , an optical film 120 , a plastic frame 130 , a light absorbing structure 140 , a first frame 150 , a second frame 160 and a light source (not shown). The light guide plate 110 is located below the liquid crystal panel 100 . The optical film 120 can be a diffusion film, a brightness enhancement film or a prism film, and is located between the liquid crystal panel 100 and the light guide plate 110 . One side of the optical film 120 is provided with a lug 121 . The plastic frame 130 has a first retaining wall 131 and a second retaining wall 132 , the first retaining wall 131 is perpendicular to the second retaining wall 132 , and the liquid crystal panel is erected on the second retaining wall 132 . The second retaining wall 132 has an opening (not shown) corresponding to the lug 121 on the optical film 120 , and the lug 121 can be engaged in the opening.

Since the optical film is increased without enlarging the outer frame, the strength of the plastic frame 130 is relatively weakened. Therefore, the cooperation between the lug 121 and the opening can increase the strength of the plastic frame 130 and better fix the optical film. 120. The opening divides the second blocking wall 132 into a third blocking wall 133 and a fourth blocking wall 134 .

Continuing to refer to FIG. 1 , the light absorbing structure 140 is attached to the outer wall (not shown) of the third barrier wall 133 perpendicular to the optical film 120 , and the light absorbing structure 140 covers the gap left when the lug 121 is inserted into the opening. Due to the design of the opening on the plastic frame 130 , light will leak out from the opening, so the light absorbing structure 140 can absorb the exposed light to prevent light leakage. The light-absorbing structure 140 can be a plastic sheet, a rubber sheet, or made of ink. The first outer frame 150 and the second retaining wall 132 clamp the liquid crystal panel 100 , the second outer frame 160 and the second retaining wall 132 clamp the light guide plate 110 , and the first outer frame 150 and the second outer frame 160 partially overlap. In this embodiment, the first outer frame 150 and the second outer frame 160 are iron frames. In other embodiments, the first outer frame 150 and the second outer frame 160 can also be plastic frames, or one can be an iron frame, The other is a plastic frame. In another embodiment, the liquid crystal display device 10 further includes an upper polarizer and a lower polarizer, and the liquid crystal panel 100 is sandwiched between the upper polarizer and the lower polarizer.

By adopting the invention, the strength of the plastic frame can be enhanced and the problem of light leakage can be avoided without enlarging the outer frame while enlarging the light guide plate and the optical film.

Hereinbefore, specific embodiments of the present invention have been described with reference to the accompanying drawings. However, those skilled in the art can understand that without departing from the spirit and scope of the present invention, various changes and substitutions can be made to the specific embodiments of the present invention. These changes and replacements all fall within the scope defined by the claims of the present invention.

Claims (9)

1. A liquid crystal display device, characterized in that, comprising: panel; a light guide plate located below the panel; an optical film, located between the panel and the light guide plate, and one side of the optical film is provided with a lug; The plastic frame has a first retaining wall and a second retaining wall perpendicular to each other, the panel is erected on the second retaining wall, the second retaining wall is provided with an opening corresponding to the lug, and the opening Divide the second retaining wall into the third retaining wall and the fourth retaining wall; a light-absorbing structure attached to the side wall of the third barrier perpendicular to the optical film, and covering the gap left when the lug is inserted into the opening; and The outer frame has an accommodating space. 2. The liquid crystal display device according to claim 1, wherein the panel is a liquid crystal panel. 3 . The liquid crystal display device according to claim 1 , further comprising an upper polarizer and a lower polarizer, and the panel is sandwiched between the upper and lower polarizers. 4. The liquid crystal display device according to claim 1, wherein the light-absorbing substance can be made of adhesive tape, rubber or ink. 5. The liquid crystal display device according to claim 1, wherein the outer frame is an iron frame or a plastic frame. 6. The liquid crystal display device as claimed in claim 1, further comprising a light source. 7. The liquid crystal display device according to claim 6, wherein the light source is a light emitting diode. 8. The liquid crystal display device according to claim 1, wherein the outer frame further comprises a first outer frame and a second outer frame, and the first outer frame and the second outer frame form an accommodating space, and the first outer frame partially overlaps the second outer frame. 9. The liquid crystal display device according to claim 1, wherein the optical film comprises a diffusion sheet, a brightness enhancement film or a prism sheet.

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