CN1979266A

CN1979266A - Liquid crystal display

Info

Publication number: CN1979266A
Application number: CNA2005101022973A
Authority: CN
Inventors: 邰明波; 麦哲魁; 任聿弘
Original assignee: Innolux Shenzhen Co Ltd; Innolux Display Corp
Current assignee: Innolux Shenzhen Co Ltd; Innolux Corp
Priority date: 2005-12-07
Filing date: 2005-12-07
Publication date: 2007-06-13

Abstract

The invention relates to a liquid crystal display (LCD), comprising a first substrate, a second substrate opposite to the first one, a liquid crystal layer arranged in between the two substrates, an integrated drive circuit and a light guide plate, where the light guide plate guides the light into the second substrate, the integrated drive circuit and the light guide plate are arranged in parallel on the same side of the second substrate. In the LCD, the arrangement of the integrated drive circuit can make full use of the space between the light guide plate and the second substrate, thus reducing the thickness and bulk of the LCD so as to reduce the space occupied by it.

Description

LCD

[technical field]

The present invention relates to a kind of LCD.

[background technology]

LCD is because itself and cathode-ray tube (CRT) (Cathode Ray Tube, CRT) display compare have low voltage drive, little power consumption, the capacity of display are big, low radiation and frivolous advantage, various audio-visual devices and communication apparatus have been widely used in, its drive integrated circult (Integrated Circuit, IC) packaged type also develops into glass flip chip of today (Chip on Glass by early stage COB (Chip on Board), TAB (Tape Carrier Bon ding), COG), (Chip on Film COF) waits packaged type to membrane of flip chip.

See also Fig. 1 to Fig. 3, Fig. 1 is a kind of vertical view of prior art LCD, and wherein Fig. 2 is the cut-open view of LCD 1 shown in Figure 1 along the II-II line, and Fig. 3 is the cut-open view of LCD 1 shown in Figure 2 along the III-III line.This LCD 1 comprises top glass substrate 11, lower glass substrate 12, is clipped in liquid crystal layer (figure does not show), flexible circuit board (Flexible Printed CircuitBoard between top glass substrate 11 and the lower glass substrate 12, FPC) 14, be positioned at the extension line 161 of the LCD 1 on the lower glass substrate 12, be positioned at the extension line 162 below the FPC 14, be positioned at the module backlight 19 and the drive integrated circult 13 of lower glass substrate 12 belows.

This module 19 backlight generally include a light guide plate 190, with the incidence surface of this light guide plate 190 (indicating) light source 191 that is oppositely arranged and the reflex housing 192 that the light that this light source 191 sends is reflexed to incidence surface.

12 of this drive integrated circult 13 and this lower glass substrate be provided with anisotropic conducting film (Anisotropic Conduct Film, ACF) 17, this anisotropic conducting film 17 is made up of binder and the conducting particles that is positioned at wherein.

Drive integrated circult 13 comprises the first function projection 151 and the second function projection 152, and wherein the position of the extension line 161 of the LCD 1 on the position of the first function projection 151 and this lower glass substrate 12 is corresponding; The position of the second function projection 152 is corresponding with extension line 162 positions below the FPC 14.

This drive integrated circult 13 is positioned on the lower glass substrate 12 and is positioned at top glass substrate 11 adjacent sides, its first function projection 151 is electrically connected with this LCD 1 by the extension line 161 of this LCD 1 and the anisotropic conducting film 17 of these first function projection, 151 belows, 152 anisotropic conducting films 17 by extension line 162 and these second function projection, 152 belows of the second function projection are electrically connected with FPC 14, and FPC 14 is electrically connected with peripheral circuit.

Be electrically connected by crimping anisotropic conducting film 17 with the extension line 161 of this LCD 1 at this drive integrated circult 13.At a certain temperature, this drive integrated circult 13 is exerted pressure, can make the insulation skin breakage on the conducting particles surface of this anisotropic conductive film 17, thereby vertically conduct electricity, horizontal direction then keeps insulation, that is, vertically conduct electricity, and keep electrical isolation in other direction corresponding to the anisotropic conductive film 17 at the first function projection, 151 places of drive integrated circult 13.The second function projection 152 of this drive integrated circult 13 is identical with the aforementioned electric connected mode with FPC 14 ways of connecting.

In this LCD 1, because drive integrated circult 13 is arranged on the lower glass substrate 12 and top glass substrate 11, FPC 14 same side, and the thickness of drive integrated circult 13 is usually than the top glass substrate 11 and the liquid crystal bed thickness of LCD 1, thereby pass through to need more exceptional space when FPC 14 connects peripheral circuits, thereby increase the thickness and the volume of LCD 1; In this module 19 backlight, need independent light source 191 and reflex housing 192, structure is comparatively complicated.

[summary of the invention]

For solving big, the bigger defective that takes up space of LCD thickness in the prior art, providing a kind of thickness is less, institute takes up space less LCD real is necessity.

A kind of LCD, it comprises that one first substrate, second substrate, relative with this first substrate are clipped in liquid crystal layer, a drive integrated circult and a light guide plate between this first, second substrate, this light guide plate imports second substrate with light, and this drive integrated circult and this light guide plate are set up in parallel the same side at this second substrate.

A kind of improvement of this better embodiment is: this drive integrated circult is to should light guide plate one side being provided with light-emitting component, and this light-emitting component is electrically connected with power supply through this drive integrated circult.

Compared with prior art, LCD of the present invention, because this drive integrated circult is positioned on second glass substrate and the different side of liquid crystal layer, light guide plate that being provided with of drive integrated circult can make full use of this LCD and the space between second glass substrate, can reduce the thickness and the volume of this LCD, thereby dwindle the shared space of this LCD.

In addition, in this LCD, this light-emitting component is electrically connected with power supply via this drive integrated circult, for LCD provides light source, can simplify the structure of this LCD.

[description of drawings]

Fig. 1 is a kind of prior art LCD synoptic diagram.

Fig. 2 is the cut-open view of LCD shown in Figure 1 along the II-II line.

Fig. 3 is the cut-open view of LCD shown in Figure 2 along the III-III line.

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

Fig. 5 is the cut-open view of LCD shown in Figure 4 along the V-V line.

[embodiment]

See also Fig. 4 and Fig. 5, Fig. 4 is the vertical view of LCD of the present invention, Fig. 5 be among Fig. 4 LCD 4 along the sectional view of V-V line.This LCD 4 comprises top glass substrate 41, lower glass substrate 42, is clipped in liquid crystal layer (figure does not show), light guide plate 400 and drive integrated circult 43 between top glass substrate 41 and the lower glass substrate 42.

This light guide plate 400 is positioned at this lower glass substrate 42 outsides, and is positioned at the opposite side of this lower glass substrate 42 with this liquid crystal layer.

This drive integrated circult 43 is positioned on the lower glass substrate 42 and light guide plate 400 the same side mutually, and it has a plurality of first function projections 451 and a plurality of second function projections 452, and this first function projection 451 and the second function projection 452 are disconnected from each other.

One side over against the incidence surface of light guide plate 400 (indicating) on this drive integrated circult 43 has light emitting diode 430, and this light emitting diode 430 is by these drive integrated circult 43 its switches of control.This light emitting diode 430 is positioned at this drive integrated circult 43 outsides, and its gauge tap is connected with power supply by this drive integrated circult 43.

This lower glass substrate 42 is provided with first anisotropic conducting film 471, second anisotropic conducting film 472 and runs through the through hole 46 of this lower glass substrate 42.This through hole 46 comprises first through hole 461 and second through hole 462, and this first through hole 461 is corresponding with the first function projection 451, and this second through hole 462 is corresponding with the second function projection 452.The both sides of lower glass substrate 42 are respectively arranged with first lead 481 and second lead 482 in this first through hole 461 and second through hole 462 so that can be conducted electricity.

First anisotropic conducting film 471 is positioned on the lower glass substrate 42 and top glass substrate 41 opposite sides, and its position is corresponding with drive integrated circult 43, first through hole 461 and second through hole 462; Second anisotropic conducting film 472 is positioned on the lower glass substrate 42 and top glass substrate 41 same side, and its position is corresponding with second through hole 462 and second lead 482.

FPC 44 is positioned on the lower glass substrate 42 and top glass substrate 41 the same side mutually, the media that this FPC 44 is electrically connected with peripheral circuit as this LCD 4.

The first function projection 451 of drive integrated circult 43 is electrically connected with the extension line 49 of LCD 4 by first lead 481 and first anisotropic conducting film 471 that runs through first through hole 461, and the second function projection 452 of drive integrated circult 43 is electrically connected with FPC 44 by second lead 482 that runs through second through hole 462.

This LCD 4 is as follows with the process that drive integrated circult 43 and FPC 44 engage:

At first, on this lower glass substrate 42, form a plurality of functional conductive films; First anisotropic conducting film 471 and second anisotropic conducting film 472 are pasted on this lower glass substrate 42, wherein first anisotropic conducting film 471 be positioned on the lower glass substrate 42 with top glass substrate 41 opposite sides on and also with first lead 481 that runs through first through hole 461 and to run through second lead 482 of second through hole 462 corresponding; On the position of second anisotropic conducting film 472 and the lower glass substrate 42 with top glass substrate 41 same side and corresponding with second lead 482 that runs through second through hole 462.This drive integrated circult 43 is placed on first anisotropic conducting film 471 with top glass substrate 41 different sides, and the first function projection 451 and the second function projection 452 are corresponding with first anisotropic conducting film 471; Under uniform temperature, speed and pressure condition, carry out precompressed and this press operation, make the first function projection 451 of drive integrated circult 43 and the second function projection 452 realize electrically connecting, to realize engaging of drive integrated circult 43 and lower glass substrate 42 by first lead 481 in first through hole 461 of the conducting particles of this first anisotropic conducting film 471 and lower glass substrate 42 and second lead 482 in second through hole 462; At last, with the lower glass substrate 42 of these drive integrated circult 43 opposition sides on, FPC 44 by binding on lower glass substrate 42 with corresponding second anisotropic conducting films 472 of second through hole 462, and is realized being electrically connected with second lead 482 in second through hole 462.

Wherein, the first function projection 451 can be square or round bump with this second function projection 452, can adopt gold or leypewter to make.

LCD 4 of the present invention, because drive integrated circult 43 is positioned on the lower glass substrate 42 and is positioned at opposition side with FPC 44, the media FPC 44 that is connected with peripheral circuit is positioned at going up of this lower glass substrate 42 and top glass substrate 41 the same side mutually, the space that light guide plate 400 that being provided with of drive integrated circult 43 can make full use of this LCD 4 and lower glass substrate are 42, can reduce the thickness and the volume of this LCD 4, thereby dwindle the shared space of this LCD 4.In this LCD 4, this light emitting diode 430 is electrically connected with power supply through this drive integrated circult 43, for light guide plate 400 provides light source, can save external light emitting diode and corollary apparatus thereof, can simplify the structure of this LCD 4.

Claims

1. LCD, comprise that one first substrate, second substrate, relative with this first substrate are clipped in liquid crystal layer, a drive integrated circult and a light guide plate between this first, second substrate, this light guide plate imports second substrate with light, it is characterized in that: this drive integrated circult and this light guide plate are set up in parallel the same side at this second substrate.

2. LCD as claimed in claim 1 is characterized in that: this drive integrated circult is to should light guide plate one side being provided with light-emitting component, and this light-emitting component is electrically connected with power supply through this drive integrated circult.

3. LCD as claimed in claim 2 is characterized in that: this light-emitting component is a light emitting diode.

4. LCD as claimed in claim 1 is characterized in that: this drive integrated circult has a plurality of function projections.

5. LCD as claimed in claim 4, it is characterized in that: further comprise an anisotropic conducting film, this anisotropic conducting film is electrically connected between this second glass substrate and this drive integrated circult and with the function projection of this drive integrated circult.

6. LCD as claimed in claim 4, it is characterized in that: this LCD has many extension lines, part to function projection that should drive integrated circult on this second glass substrate has through hole, be provided with the electric conductor of this second glass substrate upper and lower surface of conducting in this through hole, the function projection of drive integrated circult is electrically connected with this extension line by the electric conductor in this through hole.

7. LCD as claimed in claim 4 is characterized in that: the function projection of this drive integrated circult is bumping square or round bump.

8. LCD as claimed in claim 1 is characterized in that: this drive integrated circult is a strip.