CN1521542A

CN1521542A - Liquid crystal display module

Info

Publication number: CN1521542A
Application number: CNA03104350XA
Authority: CN
Inventors: 黄信道
Original assignee: Quanta Display Inc
Current assignee: AU Optronics Corp
Priority date: 2003-02-08
Filing date: 2003-02-08
Publication date: 2004-08-18
Anticipated expiration: 2023-02-08
Also published as: CN1234037C

Abstract

A liquid crystal display module comprises a liquid crystal display panel, a backlight module and an outer frame, wherein the liquid crystal display panel contains a substrate, a first polarizing plate fixed on the substrate, while the backlight module includes a light conducting plate, an illuminating source generator, a reflector plate, a lower diffusing sheet, at least a prism lens, an upper diffusing sheet, a second light polarizing plate and a housing.

Description

LCD MODULE

Technical field

The present invention relates to a kind of LCD MODULE (liquid crystal displaymodule, LCD module), especially a kind of LCD MODULE that includes the Polarizer that has the diffusion sheet function concurrently.

Background technology

Backlight module is one of key part and component of LCD, has been widely used at present in the products such as digital camera, personal digital assistant (PDA), satellite navigation system, computer monitor and flat-surface television.Generally speaking, backlight module all is located at the below of a display panel (display panel), and have a light source and an at least one diffusion sheet (diffuser), with homodisperse light transmission to this display panel, form suitable image by the pixel electrode on the control display panel again.Wherein, according to the light source position, backlight module can be divided into light source and produce from (direct illuminance) backlight module of the direct-injection type under the display panel and light source near the side-light type the display panel side (edge light) backlight module.And since direct-injection type backlight module system with light source generator be located at display panel under, therefore can be applicable to the display panel of higher brightness demand or large-size, for example computer monitor and flat television etc.

Please refer to Fig. 1, Fig. 1 is the synoptic diagram of known a kind of LCD MODULE 10.As shown in Figure 1, LCD MODULE 10 includes a display panels (LCD panel) 11 and one backlight module (back light unit, BLU) 21, display panels 11 then utilizes a housing (bezel does not show) to be assembled with backlight module 21.

Please refer to Fig. 2, Fig. 2 is the enlarged diagram of the display panels 11 among Fig. 1.As shown in Figure 2, display panels 11 comprises: one has the substrate 12 of upper surface 12a and lower surface 12b; One is pasted on first Polarizer (first polarizer) 14 on the upper surface 12a of substrate 12; A plurality of coil type packaging bodies (tape carrierpackage, TCP) 16, they have a plurality of signal output part (not shown)s that combine with substrate 12 and a plurality of signal input part (not shown) respectively; One printed circuit board (PCB) (printed circuit board, PCB) 18 that include circuit and combine with the signal input part of coil type packaging body 16; And one by attaching processing procedure (adhesion process) and utilizing the adhesive-layer (not shown) to be attached at second Polarizer (second polarizer shows) on the lower surface 12b of substrate 12.

Please refer to Fig. 3, Fig. 3 is the exploded view of the backlight module 21 among Fig. 1.As shown in Figure 3, backlight module 21 comprises: a light guide plate (light guide plate, LGP) 22, one light source generator (light source generator), 24, one reflector plate (reflector) 26, diffusion sheet (upper diffuser) 32 and one shell (P-chassis shows) on diffusion sheet (lower diffuser) 28, at least one prismatic lens (the prism sheet) 30, once.Light source generator 24 is located on the lateral edges of light guide plate 22, is used to provide a light source, and reflector plate 26 then is located at the below of light guide plate 22, in order to this source reflection to light guide plate 22.This light source can via light guide plate 22 scatterings (scatter) to down diffusion sheet 28, prismatic lens 30, go up diffusion sheet 32 and through second a Polarizer (not shown) polarization of pasting with the adhesive-layer (not shown), and the light source of polarization will be by the display panels among Fig. 1 and Fig. 2 11.Following diffusion sheet 28, prismatic lens 30 is stacked on the light guide plate 32 in order with last diffusion sheet 32, this shell then be located at reflector plate 26 belows and coat reflector plate 26 around.

Yet, because therefore the light source that the adhesive-layer of this second Polarizer itself can absorb or refraction is produced by light source generator 24 can make the display effect of LCD MODULE 10 have a greatly reduced quality.In addition; owing to carrying out this attaching processing procedure when second Polarizer 34 being attached at the lower surface 12b of substrate 12 to utilize adhesive-layer 36; the phenomenon that is enough to the quality of LCD MODULE 10 is caused the excessive glue (glueextrusion) of negative effect through regular meeting; therefore often cause deficient manufacturing procedure; and then the raising manufacturing cost, reduced competitiveness of product indirectly.

Summary of the invention

Therefore, fundamental purpose of the present invention is to provide a kind of LCD MODULE, glides and the not good problem of display effect with the process rate of improving above-mentioned known LCD MODULE.

In most preferred embodiment of the present invention, this LCD MODULE includes a display panels, a backlight module and in order to assemble the housing of this display panels and this backlight module.This display panels includes a substrate (substrate) and and is fixed in this suprabasil first Polarizer, and this backlight module then includes a light guide plate, and is located at light source generator, on the lateral edges of this light guide plate and is located at the reflector plate, of this light guide plate below and is located at following diffusion sheet, at least one prismatic lens, of being located at this time diffusion sheet surface of this light guide plate top and is located at the last diffusion sheet, of this prismatic lens top and is located on this second Polarizer and one on diffusion sheet and is located at below this reflector plate and coats this reflector plate shell on every side.Wherein this light source generator is used to provide a light source, and this second Polarizer then includes at least one roughened upper surface (upper rough surface).

Because this backlight module in the LCD MODULE of the present invention utilizes the rough surface of this second Polarizer to prevent bad phenomenon because of the irregular colour (mura) of electrostatic attraction (ESD attraction) this LCD MODULE that causes, and can avoid recurrent excessive glue phenomenon in the process of making known LCD MODULE, thereby guaranteed process quality and yield.In addition, when second Polarizer of the present invention also includes rough surface (lower rough surface), this time rough surface more can directly replace diffusion sheet on this, and then should go up diffusion sheet and be omitted, simplify and the double effects that reduces cost and reach processing procedure, and then promote product competitiveness.

Description of drawings

Fig. 1 is the synoptic diagram of a known LCD MODULE.

Fig. 2 is the enlarged diagram of the display panels 11 among Fig. 1.

Fig. 3 is the exploded view of the backlight module 21 among Fig. 1.

Fig. 4 is the synoptic diagram of LCD MODULE of the present invention

Fig. 5 to Fig. 7 is for forming the method synoptic diagram of the display panels 41 among Fig. 4.

Fig. 8 is the exploded view of the backlight module 51 among Fig. 4.

Fig. 9 is the synoptic diagram of the backlight module 51 among Fig. 4.

Embodiment

Please refer to Fig. 4, Fig. 4 is the synoptic diagram of LCD MODULE 40 of the present invention.As shown in Figure 4, LCD MODULE 40 includes a display panels 41 and a backlight module 51, and display panels 41 then utilizes a housing (not shown) to be assembled with backlight module 51.

Please refer to Fig. 5 to Fig. 7, Fig. 5 to Fig. 7 is for forming the method synoptic diagram of the display panels 41 among Fig. 4.As shown in Figure 5, display panels 41 comprises a substrate 42 with upper surface 42a and lower surface 42b.At first utilize one to attach processing procedure, first Polarizer 44 that includes viscose glue (adhesion glue) is fixed on the upper surface 42a of substrate 42.Then as shown in Figure 6, carry out coil type encapsulation, the signal output part of a plurality of coil type packaging bodies 46 is combined with substrate 42 in conjunction with (tape carrier packaging bonding, TCP bonding) processing procedure.At last as shown in Figure 7, carry out a printed circuit board (PCB) in conjunction with (printed circuit board bonding, PCB bonding) processing procedure, a printed circuit board (PCB) 48 that includes circuit is connected in the signal input part of coil type packaging body 46.

Please refer to Fig. 8 and Fig. 9, Fig. 8 is the exploded view of the backlight module 51 among Fig. 4, and Fig. 9 then is the synoptic diagram of the backlight module 51 among Fig. 4.As shown in Figure 8, backlight module 51 includes a light guide plate 52, a light source generator 54 (not being shown among Fig. 9), a reflector plate 56, once diffusion sheet 62, one second Polarizer 64 and a shell 66 (not being shown among Fig. 8) on the diffusion sheet 58, at least one prismatic lens 60, one.

Light source generator 54 is located on the lateral edges of light guide plate 52, be used to provide a light source, and in another embodiment of the present invention, light source generator 54 also can be located at the below of light guide plate 52.Reflector plate 56 is located at the below of light guide plate 52, in order to this source reflection to light guide plate 52.This light source can scatter to down diffusion sheet 58, prismatic lens 60, go up the diffusion sheet 62 and second Polarizer 64, after 64 polarizations of second Polarizer, by the display panels among Fig. 4 to Fig. 7 41 via light guide plate 52.Following diffusion sheet 58, prismatic lens 60, go up diffusion sheet 62 and second Polarizer 64 is stacked on the light guide plate 52 in order, shell 66 then be located at reflector plate 56 belows and coat reflector plate 56 around.Wherein, second Polarizer 64 includes at least one rough surface 64a and rough surface 64b once of going up, last rough surface 64a is used to prevent that because of electrostatic attraction following rough surface 64b then can scatter to this light source the display panels 41 among Fig. 4 to Fig. 7 more equably.In addition, it should be noted that when backlight module 51 when display panels 41 among Fig. 4 to Fig. 7 is assembled mutually, last rough surface 64a is contacted with the lower surface 42b of the substrate 42 among Fig. 5 to Fig. 7, following rough surface 64b then is contacted with the surface of diffusion sheet 62.

Because the following rough surface 64b of second Polarizer 64 also has the function of this light source of scattering, therefore in another embodiment of the present invention, the following rough surface 64b of second Polarizer 64 can directly replace diffusion sheet 62, by omitting the double effects of going up diffusion sheet 62 and reaching the processing procedure simplification and reduce cost.On the other hand, in another embodiment of the present invention, also can descend rough surface 64b omission and make second Polarizer 64 only possess last rough surface 64a, simplify and the double effects that reduces cost to reach processing procedure equally.

Because the backlight module 51 in the LCD MODULE 40 of the present invention utilizes the upper and lower rough surface 64a of second Polarizer 64 and 64b to prevent bad phenomenon because of the irregular colour of LCD MODULE that electrostatic attraction causes 40, and can avoid in the process of making known LCD MODULE 10, because of the excessive glue phenomenon that institute's applied pressure in this attaching processing procedure takes place, therefore guaranteed process rate.In addition, rough surface 64b down of the present invention can scatter to this light source display panels 41 more equably, thus can directly replace diffusion sheet 62, and then will go up diffusion sheet 62 and be omitted, simplify and the double effects that reduces cost and reach processing procedure, and then promote product competitiveness.

The above only is the preferred embodiments of the present invention, and all logical variation such as grade and modifications of being done according to the present patent application claim all should belong to the covering scope of patent of the present invention.

Claims

1. LCD MODULE comprises:

One display panels, this display panels includes:

One substrate, this substrate includes a upper surface and a lower surface; And

One first Polarizer, it is fixed on the upper surface of this substrate;

One backlight module, this backlight module includes:

One light guide plate;

One light source generator, it is used to provide a light source;

One reflector plate, it is located at the below of this light guide plate;

Diffusion sheet once, it is located on this light guide plate;

At least one prismatic lens, it is located at this time diffusion sheet surface;

Diffusion sheet on one, it is located on this prismatic lens;

One second Polarizer, it is located on this on diffusion sheet, this second Polarizer

Include at least one coarse surface; And

One shell, it is located at this reflector plate below and coats around this reflector plate; With

And

One housing.

2. LCD MODULE as claimed in claim 1 is characterized in that, this first Polarizer includes a viscose glue, and this first Polarizer utilizes one to attach processing procedure and be fixed on the upper surface of this substrate.

3. LCD MODULE as claimed in claim 1 is characterized in that, this light source generator is located on the lateral edges of this light guide plate.

4. LCD MODULE as claimed in claim 1 is characterized in that, this light source generator is located at side under this light guide plate.

5. LCD MODULE, it comprises:

One display panels, this display panels includes:

One substrate, this substrate includes a upper surface and a lower surface; And

One first Polarizer, it is pasted on the upper surface of this substrate;

One backlight module, this backlight module includes:

One light guide plate;

One light source generator, it is used to provide a light source;

One reflector plate, it is located at the below of this light guide plate;

One first diffusion sheet, it is located on this light guide plate;

At least one prismatic lens, it is located at this first diffusion sheet surface;

One second Polarizer is located on this prismatic lens, and this second Polarizer comprises

One first rough surface and one second rough surface are arranged; And

And

One housing.

6. LCD MODULE as claimed in claim 5 is characterized in that, this light source generator is located on the lateral edges of this light guide plate.

7. LCD MODULE as claimed in claim 5 is characterized in that this light source generator is located at the below of this light guide plate.

8. LCD MODULE as claimed in claim 5 is characterized in that, second rough surface of this second Polarizer is contacted with this prismatic lens.

9. LCD MODULE as claimed in claim 5 is characterized in that, this first Polarizer includes a viscose glue, and this first Polarizer utilizes one to attach processing procedure and be glued on the upper surface of this substrate.

10. LCD MODULE as claimed in claim 5 is characterized in that, second rough surface of this second Polarizer is as one second diffusion sheet.