CN101840080B - Liquid crystal display - Google Patents
Liquid crystal display Download PDFInfo
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- CN101840080B CN101840080B CN2009101277010A CN200910127701A CN101840080B CN 101840080 B CN101840080 B CN 101840080B CN 2009101277010 A CN2009101277010 A CN 2009101277010A CN 200910127701 A CN200910127701 A CN 200910127701A CN 101840080 B CN101840080 B CN 101840080B
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- lcd
- substrate
- base plate
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Abstract
The invention relates to a liquid crystal display, which comprises a display panel with a substrate and a flexible substrate with a plurality of leads and a protective layer, wherein the protective layer covers on the leads, and the flexible substrate is jointed together with the substrate by a fit technology; part of protective layer at the joint of the display panel and the flexible substrate is provided with a plurality of first regular or irregular salients; part of first salients extends into the substrate and is overlapped with the substrate to form a plurality of first overlap regions; and part of first salients does not extend into the substrate, and thereby, a plurality of first gaps are formed at the joint of the substrate and the flexible substrate.
Description
Technical field
The present invention relates to a kind of coating technique, and be particularly related to the coating technique of a kind of display panel and flexible base plate.
Background technology
In recent years, along with semiconductor science and technology is flourish, portable electronic product and flat-panel screens product also rise thereupon.And in the middle of the type of numerous flat-panel screens, (Liquid CrystalDisplay LCD) based on advantage such as its low voltage operating, radiationless line scattering, in light weight and volume be little, has become the main flow of display product to LCD immediately.
Generally speaking, the technology of LCD comprises one modularization (Modularized) technology.Purpose is combined into LCD with display panel (Display Panel), backlight module (Backlight Module), driving circuit (Driving Circuit) and control panel single modules such as (Control Board), wherein comprised edging, lead angle (Chamfer), polaroid paste (PolarizerAttachment), coil type encapsulation (Tape Carrier Package, TCP) or step such as flexible base plate (FlexibleSubstrate) continues and control panel (Control Board) continues.
Flexible base plate (or flexible circuit board) is being played the part of the role of continue glass substrate and printed circuit board (PCB) (or control panel) in the small-medium size LCD, (Anisotropic Conductive Film ACF) is bonded together flexible base plate respectively with glass substrate and control panel by anisotropic conductive film for it.Wherein, glass substrate has a plurality of contact mats (Pad), its can be by anisotropic conductive film and and the plain conductor (or conductive pin (Lead)) of flexible base plate be electrically connected.Generally speaking, contact mat comprises individual layer or double-level-metal layer, for example, the first metal layer (Metal 1), is positioned at second metal level (Metal 2) on the first metal layer, and part is covered in the transparency electrode (for example tin indium oxide (ITO)) on both.
General when carrying out the joint of flexible base plate and glass substrate, be earlier anisotropic conductive film to be covered on the contact mat of glass substrate, then the side with flexible base plate presses on the anisotropic conductive film of glass substrate, so the conductive pin on the flexible base plate can be electrically connected with contact mat.Thus, the signal that comes self-driven wafer just can be through flexible base plate, is sent to pel array on the glass substrate by the indium tin oxide layer on the contact mat through the first metal layer or second metal level.Therefore, the image quality and the reaction time that quality directly influences picture that engages of flexible base plate and glass substrate is so good bond layout just becomes in the technology very part and parcel.
In addition, can dispose layer protective layer (Protective Layer or SolderResistor) on the flexible base plate usually, it has insulation function, thus the part lead on the protection flexible base plate.The bond layout of flexible base plate and glass substrate can be divided into roughly that protective seam stretches into glass substrate and protective seam does not stretch into two kinds of glass substrates now.
Figure 1A shows the partial cutaway schematic of known LCD 100a.LCD 100a comprises upper substrate 101a, glass substrate 102a, liquid crystal layer 105a, flexible base plate 106a and the protective seam 104a that is covered in flexible base plate 106a.Can find out the bond layout of known flexible base plate 106a and glass substrate 102a easily by Figure 1A, shown in Figure 1A, protective seam 104a stretches into glass substrate 102a when engaging.Generally speaking, flexible base plate 106a and glass substrate 102a can fit by anisotropic conductive film (ACF).When protective seam 104a stretches into glass substrate 102a, because heat pressing process relation, can be after the anisotropic conductive film melted by heat because of the stopping of protective seam 104a, and the ACF conducting particles is reunited in the regional A of protective seam 104a.Thus, not only the out-of-flatness of fitting can be caused, and more the quality that continues can be influenced.
Figure 1B shows the partial cutaway schematic of known another kind of LCD 100b.LCD 100b and LCD 100a are similar, and only both differences are: the protective seam 104b of the flexible base plate 106b of LCD 100b does not stretch into glass substrate 102b.Please refer to Figure 1B, by Figure 1B as can be seen, protective seam 104b does not stretch into glass substrate 102b when engaging.Similarly, flexible base plate 106b and glass substrate 102b can fit by anisotropic conductive film.When protective seam 104b does not stretch into glass substrate 102b; flexible base plate 106b can produce stress concentration effect and the bending injury is easily arranged in area B; the also protection of protective seam 104b for want of of flexible base plate 106 of area B simultaneously, and easily by the scratch of the sharpened edge of glass substrate 102b institute.Thus, not only can influence the quality of transmission signals, and more can derive the bad problem of image quality of picture.
Summary of the invention
In view of this; the present invention proposes a kind of LCD; it has layer protective layer; and this protective seam not only can avoid the conducting particles of joint glue material to produce agglomeration significantly; and more can protect flexible base plate to avoid the substrate edges scratch of display panel, even the damage that is caused more can avoid flexible base plate to be bent the time.
A kind of LCD, it comprises display panel with substrate and the flexible base plate with many leads and protective seam.Protective seam is covered on the many leads, and flexible base plate is bonded together with substrate by coating technique.The partial protection layer of the joint of display panel and flexible base plate has and a plurality ofly presents rule or irregular first teat, and described a plurality of first teat partly stretches into substrate, and overlapping with substrate, forms a plurality of first overlapping regions.Part does not stretch into substrate, thereby causes a plurality of first spaces of formation between the protective seam of substrate and flexible base plate.Above-mentioned LCD also comprises control panel, and it is in order to provide the required operating voltage of display panel, clock signal and image data at least.Wherein, flexible base plate is bonded together with control panel by described coating technique.The partial protection layer of the joint of control panel and flexible base plate has a plurality of rule or irregular second teats of presenting; and described a plurality of second teat partly stretches into control panel; and part does not stretch into control panel, thereby causes a plurality of second spaces of formation between the protective seam of control panel and flexible base plate.
In one exemplary embodiment of the present invention, the opposite side of described protective seam also has a plurality of rule or irregular second teats of presenting.
The present invention mainly is that the junction with the substrate of flexible base plate and display panel is designed to a plurality of rule or irregular teats of presenting; and described a plurality of protrusion partly stretches into substrate; and part does not stretch into substrate, thereby causes a plurality of spaces of formation between the protective seam of display panel and flexible base plate.Thus, when flexible base plate and display panel by anisotropic conductive film (ACF) when fitting, unnecessary ACF conducting particles can be got rid of by described a plurality of spaces, thereby can avoid the conducting particles of joint glue material to produce agglomeration significantly.
In addition, because described a plurality of teats part can stretch into substrate, and part can not stretch into substrate, therefore not only can protect flexible base plate to avoid the substrate edges scratch of display panel, and the damage that is caused more can avoid flexible base plate to be bent the time.Moreover similar technical scheme may also be practiced in the applying of flexible base plate and control panel.
For above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, one exemplary embodiment of the present invention cited below particularly, and conjunction with figs. are described in detail below.
Description of drawings
Figure 1A shows the partial cutaway schematic of known LCD;
Figure 1B shows the partial cutaway schematic of known another kind of LCD;
Fig. 2 A shows the local schematic top plan view of the LCD of one exemplary embodiment of the present invention;
Fig. 2 B shows the schematic top plan view of the flexible base plate of Fig. 2 A;
Fig. 2 C shows the local enlarged diagram of the LCD of Fig. 2 A;
Fig. 3 A and Fig. 3 B show the local schematic top plan view of the LCD of another one exemplary embodiment of the present invention.
[main element symbol description]
101a, 101b: upper substrate
102a, 102b: glass substrate
104a, 104b, 204: protective seam
105a, 105b: liquid crystal layer
106a, 106b: flexible base plate
200,300a, 300b: LCD
202: substrate
203: display panel
204a, 304a: first teat
204b, 204d, 304b, 304d: space
204c, 304c: second teat
205: flexible base plate
205a: flexible substrate
205b: plain conductor
206: control panel
207: center line
A, A
1, A
2, B: the zone
L
1: regional A
1With regional A
2Maximum height sum total
L
2: regional A
1Height
W
1: regional A
1Width
W
2: regional A
2Breadth extreme
D: plain conductor spacing
Embodiment
With reference to accompanying drawing of the present invention, describe the example of one exemplary embodiment of the present invention in detail.
Fig. 2 A is the local schematic top plan view of the LCD of one exemplary embodiment of the present invention.Fig. 2 B is further at the schematic top plan view of the flexible base plate 205 of Fig. 2 A.Please refer to Fig. 2 A and Fig. 2 B, the LCD 200 of this one exemplary embodiment comprises the display panel 203 with substrate 202, and the flexible base plate 205 with protective seam 204 (Protective Layer or title Solder Resistor).Wherein, substrate 202 can be glass substrate or quartz base plate, and a plurality of contact mats (Pad) are set, and can be on it by the applying glued membrane, for example anisotropic conductive film (ACF) and and the plain conductor (or conductive pin (Lead)) of flexible base plate 205 be electrically connected.Generally speaking, contact mat can comprise the single or multiple lift metal-layer structure, for example double-level-metal layer structure comprises the first metal layer (Metal 1), is positioned at second metal level (Metal 2) on the first metal layer, and part is covered in the transparency electrode (for example tin indium oxide (ITO) or oxide indium zinc (IZO) etc.) on both.
Fig. 2 C is the local enlarged diagram of the LCD 200 of Fig. 2 A.Please refer to Fig. 2 A and Fig. 2 C, shown in Fig. 2 C, regional A
1The first teat 204a of protective seam 204 is overlapped in the part of substrate 202 among the presentation graphs 2A, and regional A
2The zone of space 204b among the presentation graphs 2A, promptly protective seam 204 is underlapped in the part of substrate 202, that is non-overlapped district.L
1Be regional A
1With regional A
2The maximum length summation, that is it is the maximum length of one first teat 204a, and L
2Be regional A
1Maximum length.Wherein, L
2Be about L
11/4～3/4 times, yet in a preferred embodiment, L
2With L
1Ratio served as preferred with 1: 2.W
1Be regional A
1Width, and W
2Be regional A
2Breadth extreme, W wherein
2With W
1Ratio served as preferred with 1: 1.In addition, in this one exemplary embodiment, regional A
1Area be equal to regional A
2, and shape approximation each other, yet it should be noted that in other one exemplary embodiment regional A
1Area also can be greater than or less than regional A
2Area.In addition, regional A
2The design consideration anisotropic conductive film of area size in conducting particles size and decide, when the diameter of conducting particles is big more, then regional A
2Area also need greatly to strain, vice versa.
For example, in this one exemplary embodiment, the maximum height of the first teat 204a and width in fact can be between between 5mm～10mm, and as long as the size of space 204b is at least greater than the volume (for example the particle radius of a ball is between 0.5mm～5mm) of the one or more conducting particless in the anisotropic conductive film, all are all looked deviser's demand and determine, for example the maximum height of space 204b and width can be between between 0.5mm～7mm, preferably can be between between 1mm～6mm.
Based on above-mentioned, when flexible base plate 205 and display panel 203 were fitted by anisotropic conductive film, unnecessary ACF conducting particles can pass through regional A
2Get rid of etc. the flowing space, thereby can avoid the conducting particles of joint glue material to produce agglomeration significantly.
Please continue A with reference to Fig. 2; because described a plurality of first teat 204a part can stretch into substrate 202; and part can not stretch into substrate 202; therefore not only can protect flexible base plate 205 to avoid the substrate 202 edge scratches of display panel 203, and the problem damaged of the plain conductor 205b that is caused can also avoid flexible base plate 205 by bending the time.Moreover, because described a plurality of first teat 204a and space 204b adopt staggered design, so the error of the skew of the contraposition in the tolerable modularization technology, thereby process flexibility improved.
In addition, in this one exemplary embodiment, LCD 200 also comprises control panel 206, and it is in order to provide display panel 203 required operating voltage, clock signal or image data etc. at least.Flexible base plate 205 can be bonded together with control panel 206 by anisotropic conductive film equally.Thus; the opposite side of the protective seam 204 of this one exemplary embodiment just more can have and a plurality ofly presents rule or the irregular second teat 204c (also can be rendered as wavy; but be not restricted to this); its same part stretches into control panel 206; and part does not stretch into control panel 206, thereby causes 204 of the protective seams of control panel 206 and flexible base plate 205 to form a plurality of space 204d.Wherein, preferably, the shape of described a plurality of first teat 204a and described a plurality of second teat 204c can be mutually symmetrical in the center line 207 of protective seam 204, but not as limit.
Based on above-mentioned, when flexible base plate 205 and control panel 206 are fitted by anisotropic conductive film, unnecessary ACF conducting particles can be got rid of by flowing spaces such as described a plurality of space 204d equally, thereby can avoid the conducting particles of joint glue material to produce agglomeration significantly.In this one exemplary embodiment, the maximum height of the second teat 204c and width in fact can be between between 5mm～10mm, and the size of space 204d needs only the volume (for example the particle radius of a ball is between 0.5mm～5mm) greater than the one or more conducting particless in the anisotropic conductive film, all are all looked deviser's demand and determine, for example the maximum height of space 204d and width can be between between 0.5mm～7mm, preferably can be between between 1mm～6mm.In addition, preferably, W
1With W
2And (W
1+ W
2) fall within approximately between 1～7 times wantonly two plain conductor 205b spacing d (shown in Fig. 2 B and 2C), in other words, promptly at each section W
1With W
2Total length in (or at zone, each overlay region adjacent one another are A
1With void area A
2In the scope that is contained) be provided with 2～7 plain conductor 205b.In addition; though present embodiment discloses protective seam 204 both sides and all is provided with rule and irregular teat (as the first teat 304a and the second teat 304c); but also can only in protective seam 204 and substrate 202 contacted sides teat be set in other embodiments gets final product; cause generally speaking; the side that protective seam 204 contacts with control panel 206 when panel is assembled, does not more have the demand of bending usually.
In addition; special one carry be; employed applying glued membrane is not to exceed with anisotropic conductive film in the coating technique of the substrate of flexible base plate and display panel in the present invention; the for example non-conductive glued membrane of other applying glued membrane (NCF); also be suitable for; when using non-conductive glued membrane, the design of its protective seam can be same as previous embodiment basically, so do not giving unnecessary details at this.
Fig. 3 A and Fig. 3 B are the local schematic top plan view of the LCD of another one exemplary embodiment of the present invention.Please refer to Fig. 3 A and Fig. 3 B, the LCD 300a of present embodiment, 300b are similar to LCD 200, and only LCD 300a, the first teat 304a of 300b and the shape of the second teat 304c are respectively zigzag and rectangle pectination.Wherein, the size of the first teat 304a, the second teat 304c, space 304b and space 304d, specifications design are all identical with the first teat 204a, the second teat 204c, space 204b and space 304d, do not give unnecessary details so just do not add at this.
In sum; the present invention mainly is designed to a plurality of rule or irregular teats of presenting with the junction of the substrate of flexible base plate and display panel; and described a plurality of teat partly stretches into substrate; and part does not stretch into substrate, thereby causes the protective seam joint of display panel and flexible base plate to form a plurality of spaces.Thus, when flexible base plate and display panel were fitted by anisotropic conductive film, unnecessary ACF conducting particles can be got rid of by described a plurality of spaces, thereby can avoid the conducting particles of joint glue material to produce agglomeration significantly.
In addition; because described a plurality of teat part can stretch into substrate; and part can not stretch into substrate; therefore not only can protect plain conductor on the flexible base plate to avoid the substrate edges scratch of display panel; and the damage that is caused in the time of more can avoiding flexible base plate to be bent, and then reach the continue image quality of quality and picture of serviceable life of prolonging LCD and lifting.
Though the present invention discloses as above with above-mentioned one exemplary embodiment; right its is not in order to limit the present invention; any general technical staff of the technical field of the invention; without departing from the spirit and scope of the present invention; when can doing various changes and modification, so protection scope of the present invention should be as the criterion with the scope of claims.
Claims (16)
1. LCD comprises:
Display panel has substrate; And
Flexible base plate has many leads and is covered in protective seam on the described many leads, and wherein said flexible base plate is bonded together with described substrate by coating technique; And
Control panel, in order to the required operating voltage of described display panel, clock signal or image data to be provided at least,
Wherein, described flexible base plate is bonded together with described control panel by described coating technique,
Wherein, the partial protection layer of the joint of described display panel and described flexible base plate has a plurality of rule or irregular first teats of presenting; and each described first teat partly stretches into described substrate and overlapping with described substrate; form a plurality of first overlay regions; and part does not stretch into described substrate; thereby make and form a plurality of first spaces between the described protective seam of described substrate and described flexible base plate, and
The partial protection layer of the joint of wherein said control panel and described flexible base plate has a plurality of rule or irregular second teats of presenting; and described a plurality of second teat partly stretches into described control panel; and part does not stretch into described control panel, thereby makes a plurality of second spaces of formation between the described protective seam of described control panel and described flexible base plate.
2. LCD as claimed in claim 1, the area of wherein said first overlay region equals the area in described first space.
3. LCD as claimed in claim 1, the breadth extreme of wherein said first teat and maximum length are respectively between between 5mm～10mm.
4. LCD as claimed in claim 1, the breadth extreme in wherein said first space and maximum length are respectively between between 0.5mm～7mm.
5. LCD as claimed in claim 1, the breadth extreme sum in the breadth extreme of wherein said first overlay region and described first space is between between the spacing of wantonly two described leads of 1～7 times.
6. LCD as claimed in claim 1 wherein is provided with 2～7 described lead in the scope that each described first overlay region adjacent one another are and described first space are contained.
7. LCD as claimed in claim 1, the maximum length of wherein said first overlay region are 1/4～3/4 times of maximum length of described first teat.
8. LCD as claimed in claim 1, wherein said coating technique comprise that at least described flexible base plate is by anisotropic conductive film or non-conductive glued membrane and be bonded together with described substrate.
9. LCD as claimed in claim 1, the size in wherein said a plurality of first spaces are at least greater than the volume of the conducting particles in the described anisotropic conductive film.
10. LCD as claimed in claim 1, wherein said coating technique comprise that at least described flexible base plate is by anisotropic conductive film or non-conductive glued membrane and be bonded together with described substrate and described control panel respectively.
11. LCD as claimed in claim 10, the size in wherein said a plurality of first spaces and described a plurality of second spaces are at least greater than the volume of the conducting particles in the described anisotropic conductive film.
12. LCD as claimed in claim 1, the maximum length in wherein said a plurality of first spaces and described a plurality of second spaces and width are in fact between 0.5mm～7mm.
13. that LCD as claimed in claim 1, wherein said a plurality of first teats and described a plurality of second teat are rendered as at least is wavy, zigzag or rectangle pectination.
14. LCD as claimed in claim 1, the maximum height of wherein said a plurality of first teats and described a plurality of second teats and width are in fact between 5mm～10mm.
15. LCD as claimed in claim 1, wherein said substrate are glass substrate.
16. LCD as claimed in claim 1, the shape of wherein said a plurality of first teats and described a plurality of second teats is mutually symmetrical about the center line of described protective seam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101277010A CN101840080B (en) | 2009-03-19 | 2009-03-19 | Liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101277010A CN101840080B (en) | 2009-03-19 | 2009-03-19 | Liquid crystal display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101840080A CN101840080A (en) | 2010-09-22 |
| CN101840080B true CN101840080B (en) | 2011-11-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101277010A Active CN101840080B (en) | 2009-03-19 | 2009-03-19 | Liquid crystal display |
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| Country | Link |
|---|---|
| CN (1) | CN101840080B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016029698A (en) * | 2014-07-22 | 2016-03-03 | デクセリアルズ株式会社 | Connection body and manufacturing method for the same |
| US10203791B2 (en) | 2016-11-15 | 2019-02-12 | Boe Technology Group Co., Ltd. | Display substrate, touch panel and display panel, and fabricating method thereof |
| CN108987439A (en) * | 2018-06-21 | 2018-12-11 | 武汉华星光电半导体显示技术有限公司 | Display panel and display device |
| CN108922981B (en) * | 2018-07-19 | 2021-02-23 | 上海天马微电子有限公司 | Display panel and display device |
| CN109375436B (en) * | 2018-10-31 | 2020-09-08 | 武汉华星光电半导体显示技术有限公司 | Display device |
| CN113450645B (en) * | 2020-03-27 | 2023-08-01 | 群创光电股份有限公司 | Display panel and spliced display device |
-
2009
- 2009-03-19 CN CN2009101277010A patent/CN101840080B/en active Active
Non-Patent Citations (3)
| Title |
|---|
| JP特开2001-345530A 2001.12.14 |
| JP特开平8-138808A 1996.05.31 |
| JP特开平8-94669A 1996.04.12 |
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|---|---|
| CN101840080A (en) | 2010-09-22 |
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