CN100582904C - Display panel structure - Google Patents
Display panel structure Download PDFInfo
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- CN100582904C CN100582904C CN200710108421A CN200710108421A CN100582904C CN 100582904 C CN100582904 C CN 100582904C CN 200710108421 A CN200710108421 A CN 200710108421A CN 200710108421 A CN200710108421 A CN 200710108421A CN 100582904 C CN100582904 C CN 100582904C
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- liquid crystal
- panel structure
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- silica
- electrode
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Abstract
For a panel of a silicon liquid crystal display device, a colorful light filter which is arranged inside is unevenly accumulated and distributed with residual direct current charges, so the inner electric field which controls the arrangement of liquid crystal molecules is not even. In order to reduce the residual direct current charges to make the inner electric field even, the present invention provides a panel structure of a display device, which comprises a plurality of shield layers, and the shield layers are used for surrounding the corresponding colorful light filters; wherein, each shield layer is communicated with a corresponding pixel electrode by wires.
Description
Technical field
The present invention relates to a kind of display panel structure, and be particularly related to a kind of liquid crystal on silicon (LCoS) panel construction.
Background technology
Residue direct current electric charge is that liquid crystal indicator has problem to be solved, and its reason is the accumulation of ion component on the device pixel.For example, in existing stable twisted nematic LCD (LCD) device, residue direct current electric charge is accumulated on the both alignment layers interface of each pixel, and formed remnant DC voltage causes and causing after image (after-image) phenomenon across the liquid crystal configurations between pixel and the transparency electrode.The method of head it off, such as using the low-resistance both alignment layers, existing disclosed, for example the Japanese patent application case discloses 8-54631 number in early days.
Concerning liquid crystal on silicon, the problem of residue direct current electric charge may be even more serious.Because different types of electrode (as, indium tin oxide (ITO) transparency electrode and aluminium reflection electrode) have different work functions, just the accumulation of ion component on pixel takes place easily.(on chip, make the patterning colored filter) when in silica-based liquid crystal panel, having implemented the colored filter pixelation especially, on the colored filter that the direct current electric charge is established in may anisotropically being distributed in and cause internal electric field inhomogeneous, make that the rotation of liquid crystal molecule is incomplete, thereby cause defective such as water wave ripple (mura).
Fig. 1 shows the part-structure of existing silica-based liquid crystal panel 10.In view of the above, silica-based liquid crystal panel 10 comprises silicon substrate 12, glass substrate 14, liquid crystal layer 16 and a plurality of colored filter 18, and wherein the direct current electric charge can accumulate owing to ion component but not be evenly distributed on these colored filters 18.In Fig. 1, these colored filters 18 are disposed at corresponding a plurality of sub-pixels 20 tops respectively, and these sub-pixels 20 then are disposed on the silicon substrate 12.Each sub-pixel 20 all comprises metal interconnecting layer 22, catoptron 24, protective seam 26 and antireflecting layer 28, disposes in regular turn from silicon substrate 12 to pairing colored filter 18 respectively.Insulation course 30 also has been described among Fig. 1, has been disposed on these colored filters 18; A plurality of walls 32 are formed at 18 of adjacent subpixels 20 and adjacent colored filters; Both alignment layers 34 is disposed between liquid crystal layer 16 and the insulation course 30; And a plurality of transparency electrodes 36 (only showing in this cross section), be disposed between glass substrate 14 and the liquid crystal layer 16.
At present, because the liquid crystal on silicon technology is integrated lcd technology and the silica-based VLSI (very large scale integrated circuit) of monocrystalline, compare more cost efficient of the LCD done with thin film transistor (TFT) (TFT) technology, therefore, be worth that the residue direct current electric charge on the colored filter in the liquid crystal on silicon device is had the reduction practice of innovation.
Summary of the invention
One object of the present invention is established in it and is reduced the direct current electric charge on colored filter for a kind of LCD display panel structure is provided, so that internal electric field in fact evenly can be controlled the arrangement of liquid crystal molecule wherein primely.Display panel structure according to the present invention comprises: first substrate; Second substrate, first substrate is relative disposes with this; A plurality of pixel electrodes couple this first substrate; Liquid crystal layer is disposed between described pixel electrode and this second substrate; A plurality of colored filters are disposed at corresponding described pixel electrode top respectively; And a plurality of shielding layers with electric conductivity, surround corresponding described colored filter respectively.Wherein, each this shielding layer couples this corresponding pixel electrode by lead, and this lead is made by conductive material, and described shielding layer is made by transparent material.Preferably, described pixel electrode is made by reflecting material.
Another object of the present invention is established in it and is reduced the direct current electric charge on colored filter for a kind of liquid crystal on silicon apparatus structure is provided, so that internal electric field in fact evenly can be controlled the arrangement of liquid crystal molecule wherein primely.Silica-based liquid crystal panel structure according to the present invention comprises: silicon substrate; Glass substrate, dispose relative with this silicon substrate; A plurality of reflecting electrodes couple this silicon substrate; A plurality of transparency electrodes couple this glass substrate; Liquid crystal layer is disposed between described reflecting electrode and described transparency electrode; A plurality of colored filters are disposed at corresponding described reflecting electrode top respectively; And a plurality of shielding layers with electric conductivity, surround corresponding described colored filter respectively; Wherein, each this shielding layer couples this corresponding reflecting electrode by lead, and this lead is made by conductive material, and is preferably made of aluminum; Described shielding layer is made by transparent material, is preferably made by indium tin oxide.Preferably, described transparency electrode is made by indium tin oxide.
To achieve the object of the present invention, in display pannel such as the liquid crystal on silicon device, surround the colored filter of establishing in a plurality of correspondingly with a plurality of shielding layers, wherein each of these a plurality of shielding layers all connects of correspondence in a plurality of pixel electrodes by lead.
Other purpose of the present invention, advantage and novel characteristics in conjunction with appended diagram, will more obvious by following detailed description.
Description of drawings
Fig. 1 shows the partial cross section side view of existing silica-based liquid crystal panel structure.
Fig. 2 shows the partial cross section side view according to the silica-based liquid crystal panel structure of one embodiment of the present invention.
Description of reference numerals
10 silica-based liquid crystal panels, 12 silicon substrates, 14 glass substrates, 16 liquid crystal layers,
18 colored filters, 20 sub-pixels, 22 metal interconnecting layers, 24 catoptrons,
26 protective seams, 28 antireflecting layers, 30 insulation courses, 32 walls,
34 both alignment layers, 36 transparency electrodes, 100 silica-based liquid crystal panels, 102 silicon substrates,
104 glass substrates, 106 liquid crystal layers, 108 sub-pixels, 110 metal interconnecting layers,
112 catoptrons, 114 protective seams, 116 antireflecting layers, 118 leads,
120 colored filters, 122 shielding layers, 124 insulation courses, 126 walls,
128 both alignment layers, 130 transparency electrodes.
Embodiment
Fig. 2 shows the partial cross section side view according to silica-based liquid crystal panel 100 structures of one embodiment of the present invention.Silica-based liquid crystal panel 100 comprise silicon substrate 102 and with the glass substrate 104 of these silicon substrate 102 relative configurations; Liquid crystal layer 106 is disposed between this silicon substrate 102 and this glass substrate 104; A plurality of sub-pixels 108, be disposed at this silicon substrate 102 tops, each sub-pixel 108 comprises metal interconnecting layer 110, catoptron 112, protective seam 114, antireflecting layer 116 (disposing in regular turn from silicon substrate 102 respectively) and lead 118, wherein this lead 118 is from these catoptron 112 tops, passes this protective seam 114 and this antireflecting layer 116 and disposes; A plurality of colored filters 120 are formed at these corresponding sub-pixel 108 tops respectively; A plurality of shielding layers 122 surround these colored filters 120 respectively, and so that each colored filter 120 and adjacent dielectric are isolated, wherein each this shielding layer 122 connects catoptron 112 by the lead in the corresponding sub-pixel 108 118; Insulation course 124 is formed at these colored filter 120 tops; A plurality of walls 126 are formed at 120 of adjacent subpixels 108 and adjacent colored filters, in order to separate each sub-pixel 108 and each colored filter 120; Both alignment layers 128 is disposed between liquid crystal layer 106 and the insulation course 124; And a plurality of transparency electrodes 130 (only showing in this cross section), be disposed between glass substrate 104 and the liquid crystal layer 106.
According to the liquid crystal on silicon technology as can be known, catoptron 112 is provided as pixel electrode, has characterized the reflective-mode of light transmission.In embodiments of the present invention, this catoptron 112 is made of aluminum.Silicon substrate 102 with metal interconnecting layer 110 in (monocrystalline silicon (s-Si)), then be provided with transistor circuit, to control the pixel electrode on it.
With reference to shown in Figure 2, according to embodiments of the present invention, these a plurality of colored filters 120 aim at correspondingly with these a plurality of sub-pixels 108 and be integrated into this silica-based liquid crystal panel 100 (as, by coating), and each colored filter 120 all has specific primary colors.The structure of this silica-based liquid crystal panel 100 has a plurality of colored filters 120, surrounded correspondingly by a plurality of shielding layers 122, and each this shielding layer 122 all connects catoptron 112 under corresponding a plurality of sub-pixel 108 (that is, reflecting electrode, or pixel electrode) respectively by lead 118.
In embodiments of the present invention, these shielding layers 122 are made by indium tin oxide.Because indium tin oxide possesses satisfactory electrical conductivity and material transparent characteristic, can provide the colored filter electrostatic shielding effect passed through of unregulated power line in fact.Each colored filter 120 more utilizes lead made of aluminum 118 to link corresponding shielding layer 122 and catoptron 112, is subjected to the influence of voltage on the adjacent colored filter 120 with the current potential suspension joint that prevents this colored filter 120.So, residue direct current electric charge will reduce, and the electric field of 130 of these colored filters 120 and these transparency electrodes is kept evenly.
The typical material that is used for these silica-based liquid crystal panel 100 remainder structures is as follows: titanium nitride (TiN) is used for metal interconnecting layer 110, monox (SiO
2) be used for protective seam 114, silicon nitride (Si
3N
4) be used for antireflecting layer 116, monox (SiO
2) be used for insulation course 124, monox (SiO
2) be used for insulation course 124, monox (SiO
2) be used for that wall 126, polyimide are used for both alignment layers 128, indium tin oxide is used for transparency electrode 130.Yet, also can use suitable material to replace in the above-mentioned material one or more.
Though it is illustrated that the present invention has had with regard to the explaination of the embodiment that provided, it will be understood by a person skilled in the art that, under the situation that does not break away from spirit of the present invention and scope, can make various modifications and improvement.Embodiment disclosed herein thereby only for explaination and restriction absolutely not, and scope of the present invention should be defined by the scope of accompanying Claim and is not limited to above stated specification.
Claims (7)
1. display panel structure comprises:
First substrate;
Second substrate, first substrate is relative disposes with this;
A plurality of pixel electrodes couple this first substrate;
Liquid crystal layer is disposed between described pixel electrode and this second substrate;
A plurality of colored filters are disposed at corresponding described pixel electrode top respectively; And
A plurality of shielding layers with electric conductivity surround the described colored filter of establishing in a plurality of correspondingly;
Wherein, each this shielding layer couples this corresponding pixel electrode by lead, and this lead is made by conductive material, and described shielding layer is made by transparent material.
2. display panel structure as claimed in claim 1, wherein, this pixel electrode is made by reflecting material.
3. silica-based liquid crystal panel structure comprises:
Silicon substrate;
Glass substrate, dispose relative with this silicon substrate;
A plurality of reflecting electrodes couple this silicon substrate;
A plurality of transparency electrodes couple this glass substrate;
Liquid crystal layer is disposed between described reflecting electrode and described transparency electrode;
A plurality of colored filters are disposed at corresponding described reflecting electrode top respectively; And
A plurality of shielding layers with electric conductivity surround the described colored filter of establishing in a plurality of correspondingly;
Wherein, each this shielding layer couples this corresponding reflecting electrode by lead, and described lead is made by conductive material, and described shielding layer is made by transparent material.
4. silica-based liquid crystal panel structure as claimed in claim 3, wherein, this lead is made of aluminum.
5. silica-based liquid crystal panel structure as claimed in claim 3, wherein, described reflecting electrode is made of aluminum.
6. silica-based liquid crystal panel structure as claimed in claim 3, wherein, described transparency electrode is made by indium tin oxide.
7. silica-based liquid crystal panel structure as claimed in claim 3, wherein, described shielding layer is made by indium tin oxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710108421A CN100582904C (en) | 2007-06-07 | 2007-06-07 | Display panel structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710108421A CN100582904C (en) | 2007-06-07 | 2007-06-07 | Display panel structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101320176A CN101320176A (en) | 2008-12-10 |
| CN100582904C true CN100582904C (en) | 2010-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200710108421A Expired - Fee Related CN100582904C (en) | 2007-06-07 | 2007-06-07 | Display panel structure |
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| CN (1) | CN100582904C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102023436B (en) * | 2009-09-16 | 2014-07-02 | 联华电子股份有限公司 | Liquid crystal on silicon (LCoS) panel and manufacturing method thereof |
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| CN101320176A (en) | 2008-12-10 |
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