CN102269906B - Display device - Google Patents
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- CN102269906B CN102269906B CN 201110200657 CN201110200657A CN102269906B CN 102269906 B CN102269906 B CN 102269906B CN 201110200657 CN201110200657 CN 201110200657 CN 201110200657 A CN201110200657 A CN 201110200657A CN 102269906 B CN102269906 B CN 102269906B
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Abstract
The invention relates to a display device, which comprises a display unit, a touch control unit, a backlight unit and an electrophoresis unit, wherein the touch control unit is arranged above the display unit; the backlight unit is arranged below the display unit; the electrophoresis unit is arranged on the display unit and comprises a substrate, a plurality of display electrodes, at least one storage electrode, a gate electrode and a plurality of charged particles; the substrate is provided with an active area and a surrounding area; the display electrodes are arranged in the active area of the substrate at equal intervals; the storage electrode is arranged in the surrounding area of the substrate; the gate electrode is arranged in the surrounding area of the substrate and between the display electrodes and the storage electrode; and the charged particles are arranged on the substrate and have the characteristic of mirror reflection.
Description
Technical field
The invention relates to a kind of display device, and particularly relevant for a kind of display device with minute surface reflection function.
Background technology
Along with the prosperity day by day of science and technology, digitization tools such as mobile phone (mobile phone), digital camera (digital camera), digital camera (digital video camera), mobile computer (notebook) and desktop PC develop towards direction more convenient, multi-functional and attractive in appearance invariably.When using these information products, display panel is indispensable man-machine communication interface, the Presentation Function of transmission display panel, and the user is more convenient in the operation of product.
With regard to practicality, display panel be if can add the effect of minute surface reflection, range of application that must expanded scope.At present, propose in No. 7636195, the US Patent No. in display, to utilize the mirror (meaning is polariscope) with polarisation effect that display can be reached simultaneously the function that shows with minute surface is provided.Yet the area ratio of viewing area and mirror area is for immobilizing in this design, so the user can't adjust the area ratio of viewing area and mirror area voluntarily according to demand.Moreover because the light that backlight module sends need be many through a polariscope, and it will cause the display quality of integral display to descend.Therefore, how making display can take into account display quality again with mirror face function, then is a big problem of present display.
Summary of the invention
The invention provides a kind of display device, it has superior display quality again with the minute surface reflection function.
The present invention proposes a kind of display device, and it comprises a display unit, a touch control unit, a back light unit and an electrophoretic cell.Touch control unit is disposed at the top of display unit.Back light unit is disposed at the below of display unit.Electrophoretic cell is disposed on the display unit.Electrophoretic cell comprises a substrate, a plurality of show electrode, at least one storage electrode, a gate electrode and a plurality of charged particle.Substrate has an active region and a surrounding zone that is connected with active region.Show electrode is disposed at the active region of substrate and is equidistant arrangement.Storage electrode is disposed at the surrounding zone of substrate.Gate electrode is disposed at the surrounding zone of substrate, and between show electrode and storage electrode.Charged particle is disposed on the substrate and has the characteristic of minute surface reflection.
In one embodiment of this invention, above-mentioned show electrode, storage electrode and gate electrode are same rete.
In one embodiment of this invention, the material of above-mentioned show electrode, storage electrode and gate electrode is all transparent conductive material.
In one embodiment of this invention, each above-mentioned charged particle comprises a spherical separation material, a metal level and a charged high molecular polymer.Metal level coats spherical separation material.Charged high molecular polymer covered with metal layer.
In one embodiment of this invention, above-mentioned each charged particle comprises how rice metallics and a functional group.How the particle diameter of rice metallics is less than 100 rice how.How the functional group is connected in the surface of rice metallics.
In one embodiment of this invention, above-mentioned when charged particle is distributed in the active region of substrate and is positioned at the top of show electrode fully, display device presents a complete minute surface reflective condition.
In one embodiment of this invention, above-mentioned when charged particle distribution substrate active region and when being positioned at the top of local repressentation electrode, display device presents a local repressentation and localized specular reflections state.
In one embodiment of this invention, above-mentioned when charged particle distribution substrate the surrounding zone and when being positioned at the top of storage electrode fully, display device presents a complete show state.
In one embodiment of this invention, above-mentioned display device more comprises a upper polarizer and polaroid once.Upper polarizer is disposed on the display unit, and between touch control unit and display unit.Following polaroid is disposed on the electrophoretic cell, and between electrophoretic cell and back light unit.
In one embodiment of this invention, above-mentioned electrophoretic cell is disposed between display unit and the back light unit.
In one embodiment of this invention, above-mentioned electrophoretic cell is disposed between touch control unit and the display unit.
In one embodiment of this invention, above-mentioned electrophoretic cell more comprises a subtend substrate, is disposed at the top of substrate, and contiguous touch control unit.
In one embodiment of this invention, above-mentioned electrophoretic cell more comprises a subtend substrate, is disposed at the below of substrate, and contiguous back light unit.
Based on above-mentioned, owing to have a plurality of charged particles in the electrophoretic cell of the present invention, and these charged particles have the characteristic of minute surface reflection.Therefore, the user can adjust the distribution that pressure reduction changes these charged particles voluntarily according to user demand, so that display device presents complete show state, local repressentation and localized specular reflections state and three kinds of different kenels such as minute surface reflective condition fully.Thus, display device of the present invention can be under the situation that does not influence display quality, with the minute surface function of reflecting.Moreover, owing to have a plurality of show electrodes in the electrophoretic cell of the present invention, be easy to control electric field change, therefore can avoid the slow problem of these charged particles generation skewness and translational speed.
For above-mentioned feature and advantage of the present invention can be become apparent, embodiment cited below particularly, and cooperate appended graphic being described in detail below.
Description of drawings
Figure 1A is the diagrammatic cross-section of a kind of display device of one embodiment of the invention.
Figure 1B is a kind of enlarged diagram of charged particle of the embodiment of Figure 1A.
Fig. 1 C is a kind of enlarged diagram of charged particle of another embodiment of Figure 1A.
Fig. 2 presents the diagrammatic cross-section of complete show state for the display device of Figure 1A.
Fig. 3 presents the diagrammatic cross-section of complete minute surface reflective condition for the display device of Figure 1A.
Fig. 4 presents the diagrammatic cross-section of local repressentation and localized specular reflections state for the display device of Figure 1A.
Fig. 5 is the diagrammatic cross-section of a kind of display device of another embodiment of the present invention.
Fig. 6 is the diagrammatic cross-section of a kind of display device of another embodiment of the present invention.
The electrophoretic cell that Fig. 7 illustrates the display device of Figure 1A converts the synoptic diagram of the driving process of complete show state to from complete minute surface reflective condition.
The electrophoretic cell that Fig. 8 illustrates the display device of Figure 1A converts the synoptic diagram of the driving process of complete minute surface reflective condition to from complete show state.
[primary clustering symbol description]
100,100a, 100b: display device
110: display unit
112: the first substrates
114: the second substrates
116: liquid crystal layer
120: touch control unit
130: back light unit
140,140a, 140b: electrophoretic cell
142: substrate
142a: active region
142b: surrounding zone
144a: show electrode
144b: storage electrode
144c: gate electrode
146,148: charged particle
146a: spherical separation material
146b: metal level
146c: charged high molecular polymer
147: transparent fluid
148a: rice metallics how
148b: functional group
149a, 149b: subtend substrate
150: upper polarizer
160: following polaroid
P1: primary importance
P2: the second place
P3: the 3rd position.
Embodiment
Figure 1A is the diagrammatic cross-section of a kind of display device of one embodiment of the invention.Figure 1B is a kind of enlarged diagram of charged particle of the embodiment of Figure 1A.Fig. 1 C is a kind of enlarged diagram of charged particle of another embodiment of Figure 1A.Please refer to Figure 1A, in the present embodiment, display device 100 comprises a display unit 110, a touch control unit 120, a back light unit 130 and an electrophoretic cell 140.Wherein, touch control unit 120 is disposed at the top of display unit 110, and back light unit 130 is disposed at the below of display unit 110, and electrophoretic cell 140 is disposed between 130 yuan of display unit 110 and the lists backlight.
Specifically, touch control unit 120 for example is an electric resistance touch-control panel, a capacitance type touch-control panel, an optical touch control panel, a sound wave type contact panel or an electromagnetic touch-control panel, and present embodiment does not impose any restrictions this.Display unit 110 comprises one first substrate 112, the liquid crystal layer 116 of one second substrate 114 and between first substrate 112 and second substrate 114.For instance, in the present embodiment, display unit 110 is a display panels, and wherein first substrate 112 for example is an active assembly array base plate, and second substrate 114 for example is a colored optical filtering substrates.In this mandatory declaration be, do not limit the kenel of display panels in this, it can for example be multidomain vertical alignment type (multi-domain vertical alignment, MVA) display panels, stable twisted nematic (Twisted Nematic, TN) a display panels or limit suitching type (fringe field switching, FFS) display panels, but selected display panels must present the pattern of normal white (normally white).In addition, back light unit 130 for example is bottom-lighting type back light module or a side incident type backlight module.
Specifically, please refer to Figure 1B, each charged particle 146 comprises a spherical separation material 146a, a metal level 146b and a charged high molecular polymer 146c.Wherein, metal level 146b coats the surface of spherical separation material 146a, so that spherical separation material 146a has the effect of minute surface reflection, and charged high molecular polymer 146c covered with metal layer 146b, so that spherical separation material 146a has electrically.In the present embodiment, metal level 146b for example is a silver layer, and charged high molecular polymer 146c for example is high molecular polymer or an electronegative high molecular polymer of a positively charged.
In addition, refer again to Figure 1A, in the present embodiment, display device 100 more comprises a upper polarizer 150 and polaroid 160 once.Upper polarizer 150 is disposed on the display unit 110, and between touch control unit 120 and display unit 110.Following polaroid 160 is disposed on the electrophoretic cell 140, and between electrophoretic cell 140 and back light unit 130.
What deserves to be mentioned is that the present invention does not limit the kenel of charged particle 146, though the charged particle 146 that reaches mentioned herein is made up of spherical separation material 146a, metal level 146b and charged high molecular polymer 146c.But, in other embodiment, please refer to Fig. 1 C, each charged particle 148 also can by how rice metallics 148a and functional group 148b formed, wherein how rice metallics 148a has the effect of minute surface reflection, and how the particle diameter of rice metallics 148a is less than 100 rice how, and how functional group 148b is connected in the surface of rice metallics 148a, so that how rice metallics 148a is with charging property.Therefore, the charged particle 146 that Figure 1B illustrates is for illustrating, and non-limiting the present invention.To be that example describes with charged particle 146 below.
In the time of below will describing when these charged particles 146 are distributed in the zones of different of substrate 142 of electrophoretic cell 140 (for example being active region 142a and surrounding zone 142b) in detail, the state that display device 100 presents.Fig. 2 presents the diagrammatic cross-section of complete show state for the display device of Figure 1A.Fig. 3 presents the diagrammatic cross-section of complete minute surface reflective condition for the display device of Figure 1A.Fig. 4 presents the diagrammatic cross-section of local repressentation and localized specular reflections state for the display device of Figure 1A.In brief, present embodiment is to see through the signal control electric field that touch control unit 120 is passed on, adjust the distribution of these charged particles 146 to produce voltage difference, and make display 100 present three kinds of different kenels such as complete show state, local repressentation and localized specular reflections state and complete minute surface reflective condition etc.
Specifically, please refer to Fig. 2, when these charged particles 146 all accumulated in the surrounding zone 142b of substrate 142 and are positioned at the top of storage electrode 144b fully because of voltage difference, this moment, display device 100 can present a complete show state.Please refer to Fig. 3, when these charged particles 146 moved to the active region 142a of substrate 142 and are positioned at the top of show electrode 144a fully because of voltage difference, this moment, display device 100 can present a complete minute surface reflective condition.Please refer to Fig. 4, when these charged particles 146 move to the active region 142a of substrate 142 and are positioned at local repressentation electrode 144a when going up because of voltage difference, the zone that have these charged particles 146 this moment can present the minute surface reflective condition, does not have the zone of these charged particles 146 then can present show state.That is to say that the display device 100 of this moment presents a local repressentation and localized specular reflections state.
Owing to have these charged particles 146 in the electrophoretic cell 140 of present embodiment, and these charged particles 146 have the characteristic of minute surface reflection.Therefore, when the signal that touch control unit 120 is passed on is controlled electric field, drive these charged particles 146 to produce voltage difference and produce when mobile, the distribution of these charged particles 146 can make display device 100 present three kinds of different kenels such as complete show state, local repressentation and localized specular reflections state and complete minute surface reflective condition etc.The user can adjust the area ratio of viewing area (zone that meaning does not namely have these charged particles 146 to distribute) and minute surface echo area (meaning namely has the zone that these charged particles 146 distribute) according to above-mentioned mechanism, meets user demand.Compared to known techniques, the display 100 of present embodiment can be adjusted the area ratio of viewing area and minute surface echo area voluntarily according to user's user demand, thus, can effectively promote the range of application of display 100.
Moreover present embodiment is the distribution that sees through these charged particles 146, makes display device 100 present three kinds of different kenels such as complete show state, local repressentation and localized specular reflections state and complete minute surface reflective condition etc.Compared to known employing polariscope, the display 100 of present embodiment can be under the situation that does not influence display quality, with the minute surface function of reflecting.In addition, owing to have these show electrodes 144a in the electrophoretic cell 140 of the present invention, be easy to control electric field change, therefore can avoid the slow problem of these charged particles 146 generation skewness and translational speed.
Below with two different embodiment of recycling obviously showing device 100a, 100b.In this mandatory declaration is that following embodiment continues to use assembly label and the partial content of previous embodiment, wherein adopts identical label to represent identical or approximate assembly, and has omitted the explanation of constructed content.Explanation about clipped can be with reference to previous embodiment, and following embodiment no longer repeats to give unnecessary details.
Fig. 5 is the diagrammatic cross-section of a kind of display device of another embodiment of the present invention.Please refer to Fig. 5, the display device 100a of present embodiment is similar in appearance to the display device 100 of Figure 1A, the difference part only is: the electrophoretic cell 140a of the display device 100a of present embodiment is disposed between touch control unit 120 and the display unit 110, and electrophoretic cell 140a more comprises a subtend substrate 149a, wherein subtend substrate 149a is disposed at the top of substrate 142, and contiguous touch control unit 120.
Fig. 6 is the diagrammatic cross-section of a kind of display device of another embodiment of the present invention.Please refer to Fig. 6, the display device 100b of present embodiment is similar in appearance to the display device 100 of Figure 1A, the difference part only is: the electrophoretic cell 140b of the display device 100b of present embodiment more comprises a subtend substrate 149b, wherein subtend substrate 149b is disposed at the below of substrate 110, and contiguous back light unit 130.In this mandatory declaration is that in other embodiment, because electrophoretic cell 140b is between display unit 110 and back light unit 130, and electrophoretic cell 140b is disposed on the display unit 110.Therefore, electrophoretic cell 140b also can share a substrate with display unit 110, meaning can be made in these show electrodes 144a, storage electrode 144b, the gate electrode 144c of electrophoretic cell 140b on first substrate 112 of display unit 110, thus, can reduce the cost of manufacture of display device 100b.
The electrophoretic cell that Fig. 7 illustrates the display device of Figure 1A converts the synoptic diagram of the driving process of complete show state to from complete minute surface reflective condition.Shown in the 7th figure, the voltage of initial storage electrode 144b and these show electrodes 144a is 0 volt, and gate electrode 144c is 3 volts, and these charged particles 146 are maintained on these show electrodes 144a.This moment, display device 100 presented a complete minute surface reflective condition.Then, make storage electrode 144b and gate electrode 144c be respectively 0 volt with 3 volts, and provide respectively 9 volts, no signal, no signal, and 15 volts to four these show electrodes 144a.Accordingly, present embodiment can utilize away from the show electrode 144a of gate electrode 144c and the formed electric field of voltage difference between the gate electrode 144c, and utilize the formed electric field of voltage difference between gate electrode 144c and the storage electrode 144b, these charged particles 146 are urged on the storage electrode 144b.At this moment, display device 100 converts a complete show state to by complete minute surface reflective condition, please refer to Fig. 2.
The electrophoretic cell that Fig. 8 illustrates the display device of Figure 1A converts the synoptic diagram of the driving process of complete minute surface reflective condition to from complete show state.Shown in the 8th figure, the voltage of initial storage electrode 144b and these show electrodes 144a is 0 volt, and the voltage of gate electrode 144c is 3 volts, and these charged particles 146 are maintained on the storage electrode 144b.At this moment, display device 100 presents a complete show state.Then, making storage electrode 144b and gate electrode 144c is 0 volt, and provide respectively-6 volts ,-9 volts ,-12 volts, with-15 volts to four show electrode 144a, wherein the show electrode 144a of close gate electrode 144c has higher voltage, and has lower voltage than the show electrode 144a away from gate electrode 144c.Accordingly, present embodiment can utilize the formed electric field of voltage difference between storage electrode 144b and these show electrodes 144a, and these charged particles 146 are urged on these show electrodes 144a.Moreover present embodiment can utilize the formed electric field of voltage difference between adjacent two these show electrodes 144a, assists these charged particles 146 are uniformly distributed on four show electrode 144a.Afterwards, the voltage that makes gate electrode 144c is 3 volts, and to make the voltage of remaining these show electrodes 144a and storage electrode 144b be 0 volt, by this these charged particles 146 is maintained on these show electrodes 144a.At this moment, display device 100 converts a complete minute surface reflective condition to by complete show state, please refer to Fig. 3.
In sum, owing to have a plurality of charged particles in the electrophoretic cell of the present invention, and these charged particles have the characteristic of minute surface reflection.Therefore, the user can adjust the distribution that pressure reduction changes these charged particles voluntarily according to user demand, so that display device presents complete show state, local repressentation and localized specular reflections state and three kinds of different kenels such as minute surface reflective condition fully.Thus, display device of the present invention can be under the situation that does not influence display quality, with the minute surface function of reflecting.Moreover, owing to have a plurality of show electrodes in the electrophoretic cell of the present invention, be easy to control electric field change, therefore can avoid the slow problem of these charged particles generation skewness and translational speed.
Though the present invention discloses as above with embodiment; so it is not in order to limit the present invention; have in the technical field under any and know the knowledgeable usually; without departing from the spirit and scope of the present invention; when doing a little change and retouching, so protection scope of the present invention is as the criterion when looking accompanying the claim person of defining.
Claims (11)
1. a display device is characterized in that, comprising:
One display unit;
One touch control unit is disposed at the top of this display unit;
One back light unit is disposed at the below of this display unit; And
One electrophoretic cell is disposed on this display unit, and this electrophoretic cell comprises:
One substrate has an active region and a surrounding zone that is connected with this active region;
A plurality of show electrodes are disposed at this active region of this substrate and are equidistant arrangement;
At least one storage electrode is disposed at this surrounding zone of this substrate;
One gate electrode is disposed at this surrounding zone of this substrate, and between those show electrodes and this storage electrode; And
A plurality of charged particles are disposed on this substrate and have the characteristic of minute surface reflection, and this charged particle comprises a spherical separation material, and a metal level coats this spherical separation material, and a charged high molecular polymer coats this metal level.
2. display device according to claim 1, it is characterized in that: described show electrode, storage electrode and described gate electrode are same rete.
3. display device according to claim 1, it is characterized in that: the material of described show electrode, storage electrode and this gate electrode is all transparent conductive material.
4. display device according to claim 1, it is characterized in that: wherein when those charged particles were distributed in this active region of this substrate and are positioned at the top of those show electrodes fully, this display device presented a complete minute surface reflective condition.
5. display device according to claim 1 is characterized in that: wherein when distribute this active region of this substrate and when being positioned at the top of local those show electrodes, this display device presents a local repressentation and localized specular reflections state of those charged particles.
6. display device according to claim 1 is characterized in that: wherein when distribute this surrounding zone of this substrate and when being positioned at the top of this storage electrode fully, this display device presents a complete show state of those charged particles.
7. display device according to claim 1 is characterized in that, more comprises:
One upper polarizer is disposed on this display unit, and between this touch control unit and this display unit; And
Once polaroid is disposed on this electrophoretic cell, and between this electrophoretic cell and this back light unit.
8. display device according to claim 1, it is characterized in that: wherein this electrophoretic cell is disposed between this display unit and this back light unit.
9. display device according to claim 1, it is characterized in that: wherein this electrophoretic cell is disposed between this touch control unit and this display unit.
10. display device according to claim 9, it is characterized in that: wherein this electrophoretic cell more comprises a subtend substrate, is disposed at the top of this substrate, and contiguous this touch control unit.
11. display device according to claim 1 is characterized in that: wherein this electrophoretic cell more comprises a subtend substrate, is disposed at the below of this substrate, and contiguous this back light unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110200657 CN102269906B (en) | 2011-07-18 | 2011-07-18 | Display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110200657 CN102269906B (en) | 2011-07-18 | 2011-07-18 | Display device |
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| Publication Number | Publication Date |
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| CN102269906A CN102269906A (en) | 2011-12-07 |
| CN102269906B true CN102269906B (en) | 2013-09-11 |
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| CN 201110200657 Expired - Fee Related CN102269906B (en) | 2011-07-18 | 2011-07-18 | Display device |
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| CN104240608A (en) * | 2014-09-29 | 2014-12-24 | 深圳市华星光电技术有限公司 | Display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US7312916B2 (en) * | 2002-08-07 | 2007-12-25 | E Ink Corporation | Electrophoretic media containing specularly reflective particles |
| DE602005025591D1 (en) * | 2004-01-15 | 2011-02-10 | Koninkl Philips Electronics Nv | MIRROR WITH BUILT-IN DISPLAY |
| JP5194355B2 (en) * | 2005-11-25 | 2013-05-08 | 富士ゼロックス株式会社 | Display medium and display method |
| TWI368808B (en) * | 2007-11-23 | 2012-07-21 | Chunghwa Picture Tubes Ltd | Display |
| CN201740953U (en) * | 2010-08-19 | 2011-02-09 | 华映视讯（吴江）有限公司 | Trans-reflective display device |
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Effective date of registration: 20170808 Address after: 1#, building third, fourth, 6 West Road, Mawei West Road, Mawei District, Fujian, Fuzhou Co-patentee after: Chunghwa Picture Tubes Ltd. Patentee after: CPT DISPLAY TECHNOLOGY (SHENZHEN)CO., LTD. Address before: 350015, Xingye Road, Mawei Science Park, Fujian, Fuzhou 1, China Co-patentee before: Chunghwa Picture Tubes Ltd. Patentee before: Fujian Huaying Display Technology Co., Ltd. |
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Granted publication date: 20130911 Termination date: 20190718 |