CN100373231C

CN100373231C - Faceplate of liquid crystal display

Info

Publication number: CN100373231C
Application number: CNB2005100759910A
Authority: CN
Inventors: 胡至仁
Original assignee: AU Optronics Corp
Current assignee: AU Optronics Corp
Priority date: 2005-06-07
Filing date: 2005-06-07
Publication date: 2008-03-05
Anticipated expiration: 2025-06-07
Also published as: CN1696789A

Abstract

The present invention provides a liquid crystal panel which is provided with an opening in the position of a color light filtering base plate corresponding to a conducting wire so as to solve the problem that the gaps of liquid crystal cells are uneven in integration because the height of a convex structure formed by superposing each light filtering layer and the height of the conducting wire on a lower base plate corresponding to the convex structure are high. Thus, the good rate and the quality of the liquid crystal panel are enhanced.

Description

Display panels

Technical field

The present invention is relevant for a kind of display panels, particularly relevant for the chromatic filter layer structure in the liquid crystal panel.

Background technology

Along with to the increase in demand to LCD such as mobile computer (notebook), monitor and TV, LCD vigorous growth in recent years, go out various LCD according to its mode development of handling light, for example penetrating LCD, reflective liquid-crystal display, semi-penetrated semi-reflected liquid crystal display.LCD is made up of elements such as colored filter (color filter), glass substrate (glass substrate), Polarizer (polarizer), backlight module (backlight module), liquid crystal (liquid crystal), driving circuits.In liquid crystal panel manufacturing process,, need on colored filter substrate, to be provided with various look resistance (or being referred to as filter layer), for example red color resistance, the resistance of green look, blue look resistance etc. in order to increase the color that liquid crystal panel can represent.With reference to Fig. 1 is known liquid crystal panel structure synoptic diagram, chromatic filter layer is to utilize light shield and optical lithography (photolithography) with each filter layer 102a in this structure, 102b, 102c is formed on the upper substrate 100, yet each

filter layer

102a, 102b, the interface of 102c is because overlap each other, so can form bulge-structure 104, this bulge-structure 104 is positioned on the upper substrate 100 position of echo area data line 108 (or sweep trace) on the corresponding infrabasal plate 110, and this bulge-structure 104 can substitute the effect of black matrix" (black matrix).And infrabasal plate 110 is provided with several transistors (TFT) 112 and data line 108 electric connections, and has an insulation course 107 to coat transistors 112 and data line 108 or sweep traces, more forms a reflection horizon 106 on the insulation course 107 of echo area.

Data line of these bulge-structure 104 corresponding infrabasal plates 110 (data line) and sweep trace (gateline), generally speaking, it is approximately higher than 0.3 to 0.7 micron on the surface (μ m) of echo area highly greatly.Therefore, insert again liquid crystal 20 can cause herein first the gap of 0.6 to 1.5 micron (μ m) is arranged apart from 116a and second distance 114a.And present semi-reflection and semi-transparent liquid crystal panel manufacture process is to control cell gap (cell gap) by ball-type gap (ball spacer) on the echo area.Therefore when spilling cloth ball-type gap (ball spacer), if ball-type gap (ball spacer) spills cloth on data line (data line) and sweep trace (gate line), can make that the whole uniformity coefficient of cell gap (cell gap) of liquid crystal panel is not good.

Summary of the invention

Because above-mentioned background, the object of the present invention is to provide a kind of liquid crystal panel, solve because of the overlapping formed bulge-structure of each filter layer, higher with the lead height on the pairing infrabasal plate, the whole uneven problem of institute's cell gap that causes, and the yield and the quality of raising liquid crystal panel.

In order to achieve the above object, technical characterictic provided by the invention is as follows:

A kind of display panels comprises at least:

One wire substrate, at least have a plurality of leads, and an insulation course that coats this lead and this wire substrate surface, this insulation course is because of this lead difference in height peripheral with it, and makes this insulation course of this lead of coating be higher than the insulation course that coats this wire substrate surface and cause at least one projection;

One colored optical filtering substrates is set in parallel in this wire substrate top; One liquid crystal layer is arranged between this wire substrate and this colored optical filtering substrates; It is characterized in that, also comprise:

At least one opening, be arranged on the described colored optical filtering substrates, the corresponding described lead location in the position of described opening by this fair water fin, wherein this liquid crystal layer is one first distance to thickness that should opening, to should opening thickness in addition being a second distance, wherein this opening promptly compensates this protruding height in order to compensate this lead difference in height peripheral with it, and dwindle gap between this first distance and this second distance, and then the thickness of this liquid crystal layer of homogenising.

The opening that colored optical filtering substrates of the present invention is provided with corresponding to wire substrate upper conductor position in part, this openings of sizes can be more than or equal to the width of lead.Afterwards, between wire substrate and colored optical filtering substrates, insert a liquid crystal layer.Because of the colored optical filtering substrates upper shed has remedied higher lead height, make this liquid crystal roughly the same, in little to 0 to 0.6 micrometer range of gap institute at the thickness of any position.

Description of drawings

Fig. 1 is the diagrammatic cross-section of echo area in the known liquid crystal panel.

Fig. 2 A and Fig. 2 B are the diagrammatic cross-section of echo area in the liquid crystal panel of the present invention.

Fig. 3 A and Fig. 3 B be of the present invention to have a diagrammatic cross-section of echo area in the liquid crystal panel of black matrix".

Fig. 4 A to Fig. 4 C the present invention have the different openings position on look synoptic diagram.

Symbol description among the figure:

10 colored optical filtering substrates

20 liquid crystal layers

30 electrically-conductive backing plates

100 upper substrates

102a, 102b, 102c filter layer

104 bulge-structures

106 reflection horizon

107 insulation courses

108 leads

110 infrabasal plates

112 transistors

114a, 114b second distance

116a, 116b first distance

402 penetrating regions

404 echo areas

406a, 406b data line

408a, 408b sweep trace

Embodiment

Be depicted as the diagrammatic cross-section of one embodiment of the invention as Fig. 2 A, comprise a wire substrate 30 with several wires 108, one colored optical filtering substrates 10 is set in parallel in wire substrate 30 tops, colored optical filtering substrates 10 has opening 105a corresponding lead 108, and a liquid crystal layer 20 fills up between wire substrate 30 and the colored optical filtering substrates 10.

The composition of this wire substrate 30 comprises data line and perpendicular sweep trace by on an infrabasal plate 110 several wires 108 being set, and several transistors 112 electrically connect with these data lines and with sweep trace.And have an insulation course 107 to be formed on the infrabasal plate 110 to coat transistor 112, a lead 108 and infrabasal plate 110 surfaces, can be an organic material as for the material of insulation course 107.And form a reflection horizon 106 on the insulation course 107 in being defined as the zone of echo area.

And colored optical filtering substrates 10 comprises a upper substrate 100, with infrabasal plate 110 facing surfaces on form several filter layers (or claiming the look resistance) 102a, 102b, 102c, for example be red filter layer, green filter layer and blue color filter layer etc.Non-overlapping between each filter layer and form exposed region 103a, lead 108 on this regional corresponding infrabasal plate 110, and it is identical that size and the width of lead 108 can be, but also can be shown in Fig. 2 B, exposed region 103b can be greater than the width of lead 108 corresponding lead 108 and its peripheral position.The making of this exposed region 103b can utilize the shaded portions that strengthens light shield to reach to dwindle each filter layer and make non-overlapping each other, forms exposed region 103b.Then, form a hyaline layer L05 at each

filter layer

102a, 102b, 102c in upper substrate 100 surfaces, and form opening 105a at exposed region.The size of this opening can be shown in Fig. 2 A with respect to infrabasal plate the size of opening 105a equal the width of lead 108, or shown in Fig. 2 B the size of opening 105b greater than the width of lead 108.And this hyaline layer 105 can be an organic material.

Liquid crystal layer 20 is first apart from 116b at the thickness of corresponding opening 105b, and thickness is second distance 114b beyond corresponding opening 105b, first distance and second distance about 1 micron to 7 micrometer ranges.Because opening 105a, 105b have compensated lead 108 difference in height peripheral with it, make and win apart from the gap between 116b and second distance 114b between 0 micron to 0.6 micron.Make when spilling cloth ball-type gap (ball spacer), if ball-type gap (ball spacer) spills cloth on data line (data line) and sweep trace (gate line), also can not cause the whole uniformity coefficient of cell gap (cell gap) of liquid crystal panel not good.

With reference to Fig. 3 A is another embodiment of the present invention, and a liquid crystal panel is provided, and comprises the wire substrate of being made up of infrabasal plate 110, lead 108, insulation course 107 and reflection horizon 106 just like above-mentioned 30.One colored optical filtering substrates 10, this colored optical filtering substrates 10 does not exist together with 10 of the colored optical filtering substrates of Fig. 2 A and Fig. 2 B, is that it has black matrix" 109 at exposed region 103a.The exposed region 103a of this colored optical filtering substrates 10 is approximately identical with lead 108 width with the size of opening 105a.But also can be shown in Fig. 3 B, the size of exposed region 103b and opening 105a is greater than lead 108 width.Present embodiment has compensated lead 108 difference in height peripheral with it by opening 105a equally, makes and wins apart from the gap between 116b and second distance 114b between 0 micron to 0.6 micron.Therefore improved the whole uniformity coefficient of the cell gap (cell gap) of liquid crystal panel.Liquid crystal first the distance with second distance too all at 1 micron to 7 micrometer ranges.

Opening on this colored optical filtering substrates has many embodiments such as following embodiment, but is not limited to these embodiment, can change according to need.With reference to Fig. 4 A is the floor map of a liquid crystal panel of the present invention, and this liquid crystal panel has comprised several penetrating regions 402 and echo area 404, and several data lines 406a and sweep trace 408a perpendicular to data line 406a.And all there is opening corresponding colored optical filtering substrates position on

data line

406a and 408a, does not promptly have filter layer on it fully.

Liquid crystal panel of the present invention has opening in the colored optical filtering substrates position of sweep trace 408a correspondence shown in Fig. 4 B, promptly do not have filter layer on it, but comprises that in other position of substrate data line 406b all has filter layer on it.Or the liquid crystal panel shown in Fig. 4 C has the sweep trace of filter layer 408a and data line 406a arranged on it, also has and do not have the sweep trace of filter layer 408b and data line 406b on it.Opening also can be arranged on should data line 406b and this sweep trace 408b intersection.

The above is preferred embodiment of the present invention only, is not in order to limit claim of the present invention.Still can be changed in the category that does not break away from flesh and blood of the present invention and implemented, these variations should still belong to scope of the present invention.Therefore, category of the present invention is defined by described claim scope.

Claims

1. display panels comprises at least:

One wire substrate, at least have a plurality of leads, and the insulation course on this lead of coating and this wire substrate surface, this insulation course is because of this lead difference in height peripheral with it, and make this insulation course that coats this lead be higher than the insulation course that coats this wire substrate surface, and cause at least one projection;

At least one opening, be arranged on the described colored optical filtering substrates, the corresponding described lead in the position of described opening, wherein this liquid crystal layer is first distance to thickness that should opening, to should opening thickness in addition being second distance, wherein this opening promptly compensates this protruding height in order to compensate this lead difference in height peripheral with it, and dwindle gap between this first distance and this second distance, and then the thickness of this liquid crystal layer of homogenising.

2. display panels as claimed in claim 1 is characterized in that, the gap of this first distance and this second distance is 0 micron to 0.6 micron.

3. display panels as claimed in claim 2 is characterized in that, more corresponding to the peripheral position of this lead of part, promptly the width of this opening is greater than the width of this lead for this opening.

4. display panels as claimed in claim 2 is characterized in that this colored optical filtering substrates has more a black matrix", is provided with corresponding to this opening, and the width of this black matrix" is less than or equal to the width of this opening.

5. display panels as claimed in claim 2 is characterized in that this colored optical filtering substrates has more a black matrix", is provided with corresponding to this opening.

6. display panels as claimed in claim 2 is characterized in that the width of this opening is more than or equal to the width of this lead.

7. display panels as claimed in claim 1 is characterized in that, more corresponding to the peripheral position of this lead of part, promptly the width of this opening is greater than the width of this lead for this opening.

8. display panels as claimed in claim 1 is characterized in that this colored optical filtering substrates has more a black matrix", is provided with corresponding to this opening.

9. display panels as claimed in claim 8 is characterized in that, the width of this black matrix" is less than or equal to the width of this opening.

10. display panels as claimed in claim 1 is characterized in that, this first distance is 1 micron to 7 microns.

11. display panels as claimed in claim 1 is characterized in that, this second distance is 1 micron to 7 microns.

12. display panels as claimed in claim 1 is characterized in that, this colored optical filtering substrates comprises at least:

One upper substrate;

One chromatic filter layer is arranged on this upper substrate, and wherein this chromatic filter layer comprises a separated red filter layer, a green filter layer and a blue color filter layer; And

One hyaline layer is covered on this chromatic filter layer and has at least one opening, the corresponding lead of each opening.