CN1787216A - flat display panel - Google Patents
flat display panel Download PDFInfo
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- CN1787216A CN1787216A CN 200510124871 CN200510124871A CN1787216A CN 1787216 A CN1787216 A CN 1787216A CN 200510124871 CN200510124871 CN 200510124871 CN 200510124871 A CN200510124871 A CN 200510124871A CN 1787216 A CN1787216 A CN 1787216A
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Abstract
A flat display panel comprises a first substrate, a second substrate, a black matrix pattern arranged in a non-display area on the surface of the second substrate, and a brightness enhancement film arranged on the surface of the second substrate opposite to the first substrate, wherein the area of the black matrix pattern accounts for 70-95% of the area of the corresponding pixel area.
Description
Technical field
The present invention relates to a kind of two-d display panel, particularly relate to and a kind ofly be provided with black matrix pattern and brightening piece, and the black matrix pattern area accounts for the pixel region area and reaches 70% to 95% two-d display panel.
Background technology
Organic light emitting display (Organic Light Emitting Display), be electroluminescence (Electroluminescence, EL) display is a kind of, itself because have that high brightness, reaction speed are fast, compact, advantages such as low power consumption and wide viewing angle, and be expected to replace the main flow that LCD and plasma scope become flat-panel screens of new generation.
Yet because wire pattern that organic light emitting display inside is made of metal material or electrode etc. can the reflection environment light sources, so have the not good problem of contrast, therefore organic light emitting display must be provided with the device of eliminating environment light source, to improve the not good shortcoming of contrast.The method that prior art improves the contrast of organic light emitting display mainly contains following two kinds.First kind of existing method is provided with a polaroid (polarizer) for the substrate surface in organic light emitting display, and an optically active form polaroid (circular polarizer) for example is to reduce the reflection of environment light source.Yet, though polaroid can effectively reduce the reflection of environment light source, but the light that simultaneously organic light emitting display itself is produced only has about 43% penetrance, therefore causes luminous efficiency not good, will certainly increase the power consumption of organic light emitting display for reaching enough display brightness.Second kind of existing method used the reflection that reduces environment light source then for the non-display area in organic electroluminescence display panel is provided with black matrix pattern.Yet, in non-display area black matrix pattern is set, only can reduces partial reflection, for example the reflection of the environment light source that electrode caused of plain conductor and thin-film transistor, but also can't reduce the reflection that metal electrode caused in the viewing area, so the contrast of organic light emitting display is still not good enough.
Summary of the invention
The object of the present invention is to provide a kind of two-d display panel, with the contrast of effective raising two-d display panel.
Two-d display panel provided by the invention comprises:
One first substrate;
One second substrate, this second substrate zone is divided into a plurality of pixel regions, and each pixel region comprises a viewing area and a non-display area;
One black matrix pattern is located at a surface of this second substrate, and this black matrix pattern is arranged at respectively within this non-display area; And
One brightening piece is located at this second substrate back in a surface of this first substrate;
Wherein in each pixel region the area of this black matrix pattern account for its pairing respectively this pixel region area 70% to 95% between.
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, hereinafter especially exemplified by preferred implementation, and conjunction with figs. is described in detail below.Yet following preferred implementation and accompanying drawing are only for reference and explanation usefulness, are not to be used for the present invention is limited.
Description of drawings
Fig. 1 is the schematic diagram of the organic electroluminescence display panel of one embodiment of the present invention.
Fig. 2 is the schematic diagram of the organic electroluminescence display panel of another preferred embodiment of the present invention.
Fig. 3 is the configuration schematic diagram of the pixel region of an organic electroluminescence display panel of the present invention.
Fig. 4 is the schematic diagram of the organic electroluminescence display panel of another preferred embodiment of the present invention.
Fig. 5 is the schematic diagram of the organic electroluminescence display panel of the another preferred embodiment of the present invention.
The simple symbol explanation
10 organic electroluminescence display panels, 12 first substrates
14 second substrates, 16 pixel regions
18 non-display areas, 20 viewing areas
22 black matrix patterns, 24 interlayer dielectric layers
26 switch elements, 28 pixel electrodes
30 organic luminous layers, 32 negative electrodes
34 brightening pieces, 50 organic electroluminescence display panels
52 first substrates, 54 second substrates
56 pixel regions, 58 non-display areas
60 viewing areas, 62 black matrix patterns
64 interlayer dielectric layers, 66 switch elements
68 pixel electrodes, 70 organic luminous layers
72 negative electrodes, 74 brightening pieces
76 color filter patterns, 80 organic electroluminescence display panels
82 first substrates, 84 second substrates
86 pixel regions, 88 non-display areas
90 viewing areas, 92 switch elements
94 pixel electrodes, 96 organic luminous layers
98 negative electrodes, 100 black matrix patterns
102 brightening pieces, 104 color filter patterns
Embodiment
Please refer to Fig. 1, Fig. 1 is the schematic diagram of the organic electroluminescence display panel of one embodiment of the present invention, wherein for showing characteristics of the present invention place, only shows single pixel region among the figure.As shown in Figure 1, organic electroluminescence display panel 10 of the present invention comprises that one first substrate (upper substrate) 12 and one second substrate (infrabasal plate), 14, the first substrates 12 utilize frame glue (figure does not show) to engage with second substrate 14, and uses and keep a constant spacing.The organic electroluminescence display panel 10 of present embodiment is a back side illuminated profile plate, so second substrate 14 is a display surface, therefore the material of second substrate 14 is light transmissive materials such as glass, plastics or quartz, and the material of first substrate 12 then is not limited to light transmissive material and also can be light-proof material.Second substrate 14 comprises a plurality of pixel regions 16, and each pixel region 16 can be divided into a non-display area 18 and a viewing area 20.Organic electroluminescence display panel 10 comprises a black matrix pattern 22, be arranged at the surface of second substrate 14 in the face of first substrate 12, use the reflection of the environment light source that attenuating injected back to first substrate, 12 directions by second substrate 14, wherein the material of black matrix pattern 22 can be chromium, chromium oxide and chromium nitride, or is other any material with good resistance reflex.In addition, second substrate 14 has an interlayer dielectric layer (inter-layer dielectric) 24 with the surface coverage of black matrix pattern 22, then is provided with a switch element 26 on the interlayer dielectric layer 24 in the non-display area 18, for example a thin-film transistor.In addition, on switch element 26 and the interlayer dielectric layer 24 then in regular turn storehouse one pixel electrode (anode) 28, an organic luminous layer 30 and a negative electrode (reflecting electrode) 32 are arranged, wherein pixel electrode 28 is a transparency electrode and is electrically connected with switch element 26, organic luminous layer 30 then is made of luminous organic material, and accepts the driven for emitting lights of pixel electrode 28 and negative electrode 32.
The negative electrode 32 of organic electroluminescence display panel 10 is by the material with high reflection characteristic, and for example metal constitutes, and uses the light that reflection organic luminous layer 30 is produced, to improve brightness.Yet negative electrode 32 also similarly can reflect the environment light source of being injected by second substrate, 14 directions, thereby influence the contrast of organic electroluminescence display panel 10 except the light that reflection organic luminous layer 30 is produced.Therefore, the present invention is characterized in to improve the shared ratio of area of non-display area 18, easily say it, the shared ratio of the area of viewing area 20 is then dwindled relatively.Thus, 32 the reflected ambient sources of negative electrode in the viewing area 20 will be reduced, and thus, can effectively improve the contrast of organic electroluminescence display panel 10.In addition, because the reduction of the area of viewing area 20 also can cause organic electroluminescence display panel 10 brightness own to descend, therefore the surface of organic electroluminescence display panel 10 of the present invention in second substrate 14 back to first substrate 12 also is provided with a brightening piece 34, to increase the brightness of organic electroluminescence display panel 10, wherein brightening piece 34 can optionally use BEF (brightness enhancement film) or DBEF (dualbrightness enhancement film) etc., and according to the difference of using brightening piece 34 kinds, its surface can comprise that different shape has the pattern of light guide effect, for example circular lens pattern, channel form pattern or pyramid pattern etc.In addition, brightening piece 34 also can be transparent membrane or existing any light-enhancing structure that can be used for increasing brightness of a multilayer films interference pattern.
What deserves to be explained is that in present embodiment brightening piece 34 is attached at the surface of second substrate 14, as shown in Figure 1.Yet application of the present invention is not limited to this, and brightening piece 34 also can utilize alternate manner to be formed on second substrate 14.Please refer to Fig. 2, Fig. 2 is the schematic diagram of the organic electroluminescence display panel of another preferred embodiment of the present invention, wherein is the similarities and differences of clear relatively present embodiment and last embodiment, and components identical is used identical label mark in Fig. 2, and gives unnecessary details no longer separately.As shown in Figure 2, the brightening piece 34 of the organic electroluminescence display panel 10 of present embodiment directly is made in the surface of second substrate 14, for example utilizes chemical process mode such as etching, or machining mode such as sandblast, uses the attaching mode and be different from previous embodiment.
Please refer to Fig. 3, and in the lump with reference to figure 1 and Fig. 2.Fig. 3 is the configuration schematic diagram of the pixel region of organic electroluminescence display panel of the present invention.As shown in Figure 2, the pixel region 16 of organic electroluminescence display panel 10 comprises a non-display area 18 and a viewing area 20, wherein the area of non-display area 18 account for pixel region 16 entire area 70% to 95% between, that is, black matrix pattern 22 account for pixel region 16 area 70% to 95%, cooperate the setting of brightening piece 34 again, both can reach the reflection that reduces environment light source, can take into account the brightness of organic electroluminescence display panel 10 itself again.In addition, non-display area 18 limits with the shape configuration of viewing area 20, and can be changed according to the design difference of organic electroluminescence display panel 10.
Please refer to Fig. 4, Fig. 4 is the schematic diagram of the organic electroluminescence display panel of another preferred embodiment of the present invention.As shown in Figure 4, organic electroluminescence display panel 50 of the present invention comprises one first substrate (upper substrate) 52 and one second substrate (infrabasal plate) 54, wherein second substrate 54 comprises a plurality of pixel regions 56, and each pixel region 56 can be divided into a non-display area 58 and a viewing area 60.Organic electroluminescence display panel 50 comprises a black matrix pattern 62, is arranged at the surface of second substrate 54 in the face of first substrate 52, uses the reflection of the environment light source that attenuating injected back to first substrate, 52 directions by second substrate 54.In addition, the surface that is positioned at second substrate 54 of viewing area 60 then also comprises a color filter patterns 76.In addition, color filter patterns 74 has an interlayer dielectric layer 64 with the surface coverage of black matrix pattern 62, and then is provided with a switch element 66 on the interlayer dielectric layer 64 in the non-display area 58, for example a thin-film transistor.In addition, on switch element 66 and the interlayer dielectric layer 64 then in regular turn storehouse one pixel electrode (anode) 68, an organic luminous layer 70 and a negative electrode (reflecting electrode) 72 are arranged.In addition, the surface of organic electroluminescence display panel 50 in second substrate 54 back to first substrate 52 also is provided with a brightening piece 74, to increase the brightness of organic electroluminescence display panel 50.
Be similar to previous embodiment of the present invention, the area of the non-display area 58 of the organic electroluminescence display panel 50 of present embodiment account for pixel region 56 entire area 70% to 95% between, that is, black matrix pattern 62 account for pixel region 56 area 70% to 95%, and be that with the previous embodiment difference surface of second substrate 54 of viewing area 60 is provided with color filter patterns 76.The effect of color filter patterns 76 is that absorption portion is incident to the environment light source in the viewing area 60, for instance, if color filter patterns 76 is blue filter pattern, the environment light source (white light) that then is positioned at the red light wavelength scope can be absorbed, can reduce the environment light source of injecting in the viewing area 60 thus, and then reduce by 72 the reflected ambient sources of negative electrode in the viewing area 60, and can improve the contrast of organic electroluminescence display panel 50.
Please refer to Fig. 5, Fig. 5 is the schematic diagram of the organic electroluminescence display panel of the another preferred embodiment of the present invention.As shown in Figure 5, organic electroluminescence display panel 80 of the present invention comprises one first substrate (infrabasal plate) 82 and one second substrate (upper substrate) 84, and first substrate 82 and second substrate 84 utilize frame glue (figure does not show) to engage, and uses and keep a constant spacing.Because the organic electroluminescence display panel 80 of present embodiment is a positive surface-emitting type panel, so the material of second substrate 84 is light transmissive materials such as glass, plastics or quartz, the material of first substrate 82 then is not limited to light transmissive material and also can be light-proof material.Second substrate 84 comprises a plurality of pixel regions 86, and each pixel region 86 can be divided into a non-display area 88 and a viewing area 90.Be positioned on first substrate 82 of non-display area 88 and comprise a switch element 92, on a for example thin-film transistor, and switch element 92 and first substrate 82 that is positioned at viewing area 90 then in regular turn storehouse one pixel electrode 94, an organic luminous layer 96 and a negative electrode 98 are arranged.Because the organic electroluminescence display panel 80 of present embodiment is a positive surface-emitting type panel, therefore pixel electrode 94 is by the material with high reflection characteristic, and for example metal constitutes, and uses the light that reflection organic luminous layer 96 is produced, to improve brightness, negative electrode 98 then is made of transparent conductive material.
In addition, second substrate 84 that is positioned at non-display area 88 is provided with a black matrix pattern 100, and on the black matrix pattern 100 and comprise a brightening piece 102, in addition, be positioned on second substrate 84 of viewing area 90 color filter patterns 104 also optionally is set.Present embodiment and previous embodiment difference are that organic electroluminescence display panel 80 is a positive surface-emitting type panel, therefore the position of black matrix pattern 100, brightening piece 102 and color filter patterns 104 is different, yet organic electroluminescence display panel 80 still have entire area that the area of non-display area 88 accounts for pixel region 86 70% to 95% between feature, black matrix pattern 100, brightening piece 102 describe in detail in previous embodiment with the effect of color filter patterns 104 in addition, so no longer add to give unnecessary details at this.
In sum, the principal character of organic electroluminescence display panel of the present invention be the area with black matrix pattern (non-display area) be controlled at pixel region entire area 70% to 95% between, and cooperate the setting of brightening piece, therefore can under the situation that does not influence brightness, improve the contrast of organic electroluminescence display panel.What deserves to be explained is that the area ratio that the present invention is characterized in non-display area and viewing area disposes and the use of brightening piece, therefore other design of organic electroluminescence display panel, for example the composition of light-emitting diode and electrode material etc. can be done appropriateness adjustment according to existing technology.In addition, the foregoing description is that example illustrates feature of the present invention with the organic electroluminescence display panel, but two-d display panel of the present invention is not limited to organic electroluminescence display panel.
The above only is the preferred embodiments of the present invention, and all equalizations of doing according to claim of the present invention change and modify, and all should belong to covering scope of the present invention.
Claims (10)
1. two-d display panel comprises:
One first substrate;
One second substrate, this second substrate zone is divided into a plurality of pixel regions, and each pixel region comprises a viewing area and a non-display area;
One black matrix pattern is located at a surface of this second substrate, and this black matrix pattern is arranged at respectively within this non-display area; And
One brightening piece is located at this second substrate back in a surface of this first substrate;
Wherein the area of this black matrix pattern in each pixel region account for its pairing respectively this pixel region area 70% to 95% between.
2. two-d display panel as claimed in claim 1, wherein this black matrix pattern is located at the surface of this second real estate to this first substrate.
3. two-d display panel as claimed in claim 1 also comprises a color filter patterns, is located at this second real estate this surface to this first substrate, and this color filter patterns is positioned at respectively within this viewing area.
4. two-d display panel as claimed in claim 1, wherein this black matrix pattern is located at this second substrate this surface back to this first substrate.
5. two-d display panel as claimed in claim 1 also comprises a color filter patterns, is located at this surface of this this first substrate of second substrate back, and this color filter patterns is positioned at respectively within this viewing area.
6. two-d display panel as claimed in claim 1, wherein this brightening piece utilization attaching mode is formed on this second substrate.
7. two-d display panel as claimed in claim 1, wherein this brightening piece directly is formed on this second substrate.
8. two-d display panel as claimed in claim 1, wherein this second substrate is a display surface back to this surface in this first substrate.
9. two-d display panel as claimed in claim 1, wherein this two-d display panel is an organic electroluminescence display panel.
10. two-d display panel comprises:
Transparent upper substrate, this two-d display panel is luminous from this upper substrate;
Infrabasal plate, this second substrate zone is divided into a plurality of pixel regions, and each pixel region comprises a viewing area and a non-display area;
Black matrix pattern is located on the surface of this upper substrate, and this black matrix pattern is arranged at respectively within this non-display area; And
Brightening piece is located at this upper substrate back in a surface of this infrabasal plate;
Wherein the area of this black matrix pattern in each pixel region account for its pairing respectively this pixel region area 70% to 95% between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101248715A CN100399567C (en) | 2005-11-23 | 2005-11-23 | flat display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101248715A CN100399567C (en) | 2005-11-23 | 2005-11-23 | flat display panel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1787216A true CN1787216A (en) | 2006-06-14 |
| CN100399567C CN100399567C (en) | 2008-07-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101248715A Expired - Fee Related CN100399567C (en) | 2005-11-23 | 2005-11-23 | flat display panel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100399567C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110444580A (en) * | 2019-01-25 | 2019-11-12 | 友达光电股份有限公司 | Display panel |
| WO2020015443A1 (en) * | 2018-07-18 | 2020-01-23 | 京东方科技集团股份有限公司 | Transparent display panel and display apparatus |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10268803A (en) * | 1997-03-27 | 1998-10-09 | Canon Inc | Black matrix, color filter substrate, and their manufacture, and liquid crystal element |
| JPH11295712A (en) * | 1998-04-09 | 1999-10-29 | Hitachi Ltd | Liquid crystal display |
-
2005
- 2005-11-23 CN CNB2005101248715A patent/CN100399567C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020015443A1 (en) * | 2018-07-18 | 2020-01-23 | 京东方科技集团股份有限公司 | Transparent display panel and display apparatus |
| US11404488B2 (en) | 2018-07-18 | 2022-08-02 | Hefei Xinsheng Optoelectronics Technology Co., Ltd. | Transparent display panel and display device |
| CN110444580A (en) * | 2019-01-25 | 2019-11-12 | 友达光电股份有限公司 | Display panel |
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| Publication number | Publication date |
|---|---|
| CN100399567C (en) | 2008-07-02 |
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