CN100555040C - Display panels and use its liquid crystal indicator - Google Patents
Display panels and use its liquid crystal indicator Download PDFInfo
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- CN100555040C CN100555040C CNB2007101111923A CN200710111192A CN100555040C CN 100555040 C CN100555040 C CN 100555040C CN B2007101111923 A CNB2007101111923 A CN B2007101111923A CN 200710111192 A CN200710111192 A CN 200710111192A CN 100555040 C CN100555040 C CN 100555040C
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Abstract
A kind of display panels comprises that one first substrate, one second substrate, a liquid crystal layer, an optical lightscreening layer and a colored look change layer.Second substrate is with respect to the first substrate setting, and constitutes a plurality of picture elements with first substrate.Liquid crystal layer is sealed between first substrate and second substrate.The optical lightscreening layer is arranged on first substrate.The optical lightscreening layer is used so that one first color of light is passed through the optical lightscreening layer.Colored look changes layer and is arranged at second substrate.Colored look changes floor tool one first look commentaries on classics district, one second look in each picture element and changes a district and a penetrating region, makes first color of light produce one second color of light by back, first look commentaries on classics district by this, and makes first color of light produce one the 3rd color of light by back, second look commentaries on classics district.
Description
Technical field
The present invention is relevant for a kind of display panels and use its liquid crystal indicator, and particularly relevant for a kind of display panels of semi-penetration semi-reflective form and use its liquid crystal indicator.
Background technology
Present display panels (liquid crystal display, LCD) it is quite general to be used for the situation of electronic installation, be found in that (personal digital assistant is PDA) and in the electronic installation of mobile computer etc. such as mobile phone, personal digital assistant.
General display panels can be divided into reflecting type liquid crystal display panel (reflective LCD), penetrate through type liquid crystal display board (transmissive LCD) and half-penetration half-reflection liquid crystal display panel (transflective LCD) according to the source of light source.Reflecting type liquid crystal display panel is to utilize the baffle reflection external light source, so that the panel light source to be provided.Penetrate through type liquid crystal display board is to utilize backlight module to produce back light, so that the panel light source to be provided.Half-penetration half-reflection liquid crystal display panel is the characteristic in conjunction with aforementioned two kinds of display panels, utilizes external light source (as reflecting type liquid crystal display panel) and back light (as penetrate through type liquid crystal display board) simultaneously, so that the panel light source to be provided.
See also Figure 1A, it illustrates the side view of traditional half-penetration half-reflection liquid crystal display panel.Half-penetration half-reflection liquid crystal display panel 100 comprises a semi-penetration semi-reflective plate 150 and a backlight module 110.Half-penetration half-reflection liquid crystal display panel 100 is to utilize semi-penetration semi-reflective plate 150, with the back light L12 that utilizes external light source L11 and backlight module 110 to be provided simultaneously.Yet the penetrance and the reflectivity of semi-penetration semi-reflective plate 150 are lower, when display panels under reflective-mode, must cause whole light utilization efficiency lower by semi-penetration semi-reflective plate 150 with the reflection external light source.
See also Figure 1B, it illustrates the side view of another traditional half-penetration half-reflection liquid crystal display panel.Half-penetration half-reflection liquid crystal display panel 200 comprises a backlight module 210.In addition, half-penetration half-reflection liquid crystal display panel 200 is in having a reflecting plate 251 to constitute an echo area 281 in the picture element 270 each time.Zone beyond the echo area 281 of sub picture element 270 forms a photic zone 282.External light source L21 can be reflected in echo area 281, and the back light L22 that photic zone 282 can make backlight module 210 be provided penetrates.Thus, half-penetration half-reflection liquid crystal display panel 200 can utilize external light source L21 and back light L22 simultaneously.And under reflective-mode, also can utilize echo area 281 reflection external light sources to show.Yet sub picture element 270 has under the situation of echo area 281 and photic zone 282 simultaneously, makes display panels 200 diminish in the aperture opening ratio (aperture ratio) of pattern of penetrating and reflective-mode.
Summary of the invention
The present invention provides a kind of display panels and a kind of liquid crystal indicator of using it.Display panels is provided with optical lightscreening layer and chromatic filter layer, utilizes external light source and back light to see through the optical lightscreening layer, and sees through the color of chromatic filter layer conversion by its visible light.
According to the present invention, a kind of display panels is proposed, this display panels comprises that one first substrate, one second substrate, a liquid crystal layer, an optical lightscreening layer and a colored look change layer.Second substrate is with respect to the first substrate setting, and constitutes a plurality of picture elements with first substrate.Liquid crystal layer is sealed between first substrate and second substrate.The optical lightscreening layer is arranged on first substrate, is provided with in regular turn by a first metal layer, a clearance layer and one second metal level to form.The optical lightscreening layer is used so that one first color of light is passed through the optical lightscreening layer.Colored look changes layer and is arranged at second substrate.Colored look changes floor tool one first look commentaries on classics district, one second look in each picture element and changes a district and a penetrating region, makes first color of light produce one second color of light by back, first look commentaries on classics district by this, and makes first color of light produce one the 3rd color of light by back, second look commentaries on classics district.
According to the present invention, reintroduce a kind of liquid crystal indicator, this liquid crystal indicator comprises a display panels and a backlight module.Display panels comprises that one first substrate, one second substrate, a liquid crystal layer, an optical lightscreening layer and a colored look change layer.Second substrate is with respect to the first substrate setting, and constitutes a plurality of picture elements with first substrate.Liquid crystal layer is sealed between first substrate and second substrate.The optical lightscreening layer is arranged on first substrate, is provided with in regular turn by a first metal layer, a clearance layer and one second metal level to form.The optical lightscreening layer is used so that one first color of light is passed through the optical lightscreening layer.Colored look changes layer and is arranged at second substrate.Colored look changes floor tool one first look commentaries on classics district, one second look in each picture element and changes a district and a penetrating region, makes first color of light produce one second color of light by back, first look commentaries on classics district by this, and makes first color of light produce one the 3rd color of light by back, second look commentaries on classics district.Backlight module is positioned at the opposite side that first substrate is provided with the optical lightscreening layer.Backlight module is in order to provide a back light to display panels.
For foregoing of the present invention can be become apparent, preferred embodiment cited below particularly, and cooperate appended graphicly, be described in detail below:
Description of drawings
Figure 1A illustrates the side view of traditional half-penetration half-reflection liquid crystal display panel.
Figure 1B illustrates the side view of another traditional half-penetration half-reflection liquid crystal display panel.
Fig. 2 illustrates the side view according to the liquid crystal indicator of first embodiment of the invention.
Fig. 3 illustrates white light and penetrates spectrogram after by the optical lightscreening layer.
The back light that Fig. 4 A illustrates the backlight module of Fig. 2 penetrates the synoptic diagram of display panels.
Fig. 4 B illustrates the synoptic diagram that external light source is injected the display panels back reflection.
Fig. 5 illustrates the side view according to the liquid crystal indicator of second embodiment of the invention.
The primary clustering symbol description
100,200: half-penetration half-reflection liquid crystal display panel
110,210,395: backlight module
L12, L22, L31: back light
150: the semi-penetration semi-reflective plate
L11, L21, L41: external light source
251: reflecting plate
270: sub picture element
281: the echo area
282: photic zone
300: liquid crystal indicator
310: picture element
311: the first substrates
312: the second substrates
313: liquid crystal layer
L32: first color of light
L33: second color of light
L34: the 3rd color of light
330: colored look changes layer
Look changeed the district in 331: the first
Look changeed the district in 332: the second
333: penetrating region
340: the optical lightscreening layer
342: the first metal layer
343: clearance layer
344: the second metal levels
390: display panels
L43: red light
L44: green light
L42: blue light
L45: sodium yellow
Embodiment
First embodiment
Please refer to Fig. 2, it illustrates the side view according to the liquid crystal indicator of first embodiment of the invention.As shown in Figure 2, the liquid crystal indicator 300 of present embodiment comprises a display panels 390 and a backlight module 395, and backlight module 395 is arranged at a side of display panels 390.Display panels 390 comprises that one first substrate 311, one second substrate 312, a liquid crystal layer 313, an optical lightscreening layer 340 and a colored look change layer 330.Second substrate 312 is provided with respect to first substrate 311, and constitutes a plurality of picture elements (not illustrating) with first substrate 311.Present embodiment is to illustrate with a picture element 310.Liquid crystal layer 313 is sealed between first substrate 311 and second substrate 312.Optical lightscreening layer 340 is arranged on first substrate 311.
Be provided with in regular turn by a first metal layer 342, a clearance layer 343 and one second metal level 344 as for optical lightscreening layer 340 and form.Preferably, as shown in Figure 2, optical lightscreening layer 340 more can comprise a transparency carrier.Present embodiment is as this transparency carrier, with carrying the first metal layer 342, clearance layer 343 and second metal level 344 with first substrate 311.Transparency carrier (first substrate 311 just) can be a glass substrate, a plastic base or a plastics mantle.The material of the first metal layer 342 and second metal level 344 comprises silver or silver alloy, and the thickness of the first metal layer 342 and second metal level 344 is about 5 nanometer to 60 nanometers.Clearance layer 343 can be a dielectric film or a metallic conduction oxide.The material of interface film comprises bifluoride magnesium (MgF
2), silicon dioxide (SiO
2), alundum (Al (Al
2O
3), titania (TiO
2), zirconium dioxide (ZrO
2) or niobium pentaoxide (Nb
2O
5).Preferably, when the material of clearance layer 343 was silicon dioxide, the thickness of clearance layer 343 was about 10 nanometer to 120 nanometers.Or when the material of clearance layer 343 was titania, the thickness of clearance layer 343 was about 10 nanometer to 55 nanometers.In addition, clearance layer 343 material during for the metallic conduction oxide comprise tin indium oxide (indium tin oxide, ITO), indium zinc oxide (indium zinc oxide, IZO) or aluminum zinc oxide (aluminum zinc oxide, AZO).
By the thickness of above-mentioned clearance layer 343 and selecting for use of material, optical lightscreening layer 340 can select to allow the visible light of particular range of wavelengths penetrate.In present embodiment, optical lightscreening layer 340 usefulness are so that a blue light passes through, and for instance, the material of clearance layer 343 for example is a silicon dioxide, and the about 70-110 nanometer of its thickness.And seeing also Fig. 3, it illustrates white light and penetrates spectrogram after by the optical lightscreening layer.Can be observed out by Fig. 3, after white light passed through optical lightscreening layer 340, wavelength was higher between the penetrance of the visible light of 400～450 nanometers.And wavelength generally is considered as being bordering on blue visible light between 400～450 nanometers.Therefore, optical lightscreening layer 340 in display panels 390 with so that blue light pass through.
Please consult Fig. 2 once more, colored look changes layer 330 and is arranged at second substrate 312.In present embodiment, colored look changes layer 330 and is arranged between first substrate 311 and second substrate 312.Colored look changes floor 330 tool one first look in picture element 310 and changes 331,1 second look commentaries on classics district, district, 332 and one penetrating region 333, and these looks change district and each corresponding sub picture element setting of penetrating region.
In present embodiment, colored look changes floor 330 and comprises a fluorescent dye (fluorescent dye) and a resin (binder resin) in the material that first look changes 331 and second look commentaries on classics district, district 332.Colored look changes floor 330 and comprises that in the fluorescent dye that first look changes district 331 pyridine is the dyestuff (pyridine-based dye) of base-material or the dyestuff dyestuffs such as (rhodamine-based dye) that rhodamine is base-material.Have the visible light of absorbing wavelength because colored look changes floor 330 in the fluorescent dye that first look changes district 331, and the radiation wavelength is between the characteristic of the visible light of 600～700 nanometers between 400～600 nanometers.Thus, the fluorescent dye in first look commentaries on classics district 331 can be nearly blue visible light and convert the visible light that is bordering on redness to.
Colored look changes floor 330 and comprises coumarine dye (coumarin dye) or naphthalimide dyestuff (naphthalimide dye) in the fluorescent dye that second look changes district 332.Have the visible light of absorbing wavelength because colored look changes floor 330 in the fluorescent dye that second look changes district 332, and the radiation wavelength is between the characteristic of the visible light of 480～600 nanometers between 400～600 nanometers.Therefore, the fluorescent dye in second look commentaries on classics district 331 can be nearly blue visible light and convert the visible light that is bordering on green to.Change layer 330 in the material of penetrating region 333 as for colored look, it can be a transparent photoresistance, or penetrating region 333 is a hollow structure.In present embodiment, have consistent in fact flatness in order to make colored look change layer 330, therefore adopt the material of transparent photoresistance as penetrating region 333.
Please refer to Fig. 4 A, its back light that illustrates the backlight module of Fig. 2 penetrates the synoptic diagram of display panels.Backlight module 395 for example is positioned at first substrate, 311 sides.In the pattern of penetrating, backlight module 395 provides a back light L31 to display panels 390.When back light L31 injected optical lightscreening layer 340, because optical lightscreening layer 340 has the effect that selective light penetrates frequency spectrum, thereby optical lightscreening layer 340 only can make a specific coloured light, and for example the first color of light L32 passes through.As previously mentioned, the first color of light L32 of present embodiment is a blue light.In other words, optical lightscreening layer 340 only makes blue light pass through.
Then, the first color of light L32 (blue light) injects liquid crystal layer 313.Then, after the first color of light L32 distinguished 331 and second look commentaries on classics district 332 by first look commentaries on classics of colored look commentaries on classics floor 330 respectively, each produced one second color of light L33 and one the 3rd color of light L34.This second color of light L33 and the 3rd color of light L34 respectively are red light and green light.In other words, blue light produces red light and green light respectively after changeing 331 and second look commentaries on classics district, district 332 by first look.In addition, because penetrating region 333 is transparent photoresistance, therefore the first color of light L32 also is blueness in keeping original color by penetrating region 333 backs.Thus, light source is after penetrating colored look commentaries on classics layer 330, and each sub picture element just can show red light, blue light and green light, makes display panels 390 display color picture under the pattern of penetrating.
Please refer to Fig. 4 B, it illustrates the synoptic diagram that external light source is injected the display panels back reflection.In present embodiment, be that a white light illustrates with external light source L41.After external light source L41 is injected by display panels 390 outsides, at first change layer 330 by colored look.Because external light source L41 is white light, so the blue light L42 that is had among the external light source L41 can change district's 331 and second look by first look that colored look changes floor 330 and change and distinguish 332, and produces a red light L43 and a green light L44 respectively.Then, red light L43 and green light L44 inject liquid crystal layer 313 respectively, and then inject optical lightscreening layer 340.Because optical lightscreening layer 340 only makes blue light L42 pass through, so optical lightscreening layer 340 reflection red light L43 and green light L44.At this moment, red light L43 and green light L44 also can't change 331 and second look commentaries on classics district, first look commentaries on classics district 332 of floor 330 by colored look.Therefore, red light L43 and green light L44 be promptly because of constantly reflecting energy loss, and die away.
On the other hand, external light source L41 is if the penetrating region 333 that changes layer 330 by colored look is injected display panels 390, because penetrating region 333 is transparent photoresistance in present embodiment, so external light source L41 still keeps original color, also is white.When external light source L41 injects liquid crystal layer 313, and then inject optical lightscreening layer 340, because optical lightscreening layer 340 only makes blue light pass through, so the blue light L42 that is had among the external light source L41 promptly penetrates by the direction of optical lightscreening layer 340 toward first substrate 311.Remaining external light source L41 is promptly by 340 reflection of optical lightscreening layer.The color-set of remaining external light source L41 becomes the mixed light of red light L43 and green light L44, and meaning is a sodium yellow L45.This sodium yellow L45 promptly keeps same color to pass through penetrating region 333.
In other words, in reflective-mode,, blue light L42 produces red light L43 and green light L44 respectively after district's 331 and second look changes district 332 when changeing by first look.Yet, the light of all non-blue lights of optical lightscreening layer 340 reflection, thus red light L43 and green light L44 in display panels 390 promptly because of constantly reflecting consumed energy.Can keep original color as for external light source L41 after by penetrating region 333.Then, external light source L41 is when injecting optical lightscreening layer 340, and blue light L42 is by optical lightscreening layer 340.All the other color of light are mixed light, and after 340 reflection of optical lightscreening layer, penetrate from penetrating region 333 again.
Second embodiment
Please refer to Fig. 5, it illustrates the side view according to the liquid crystal indicator of second embodiment of the invention.The difference of the present embodiment and first embodiment is that the colored look of liquid crystal indicator 300 changes the position that is provided with of layer 330.In present embodiment, colored look changes layer 330 and is arranged at the outside of second substrate 312 with respect to first substrate 313.Though colored look changes layer 330 change in present embodiment the position is set, colored look is provided by layer 330 effect that still can provide as first embodiment.
That is to say that in present embodiment, the light of injecting also can change color or keep original color because of the different zone of changeing layer 330 by colored look.If light changeed the district at 331 o'clock by first look, light can be converted to redness accordingly.If light changeed the district at 332 o'clock by second look, light then can be converted to green accordingly.As for when light passes through penetrating region 333, because the material of penetrating region 333 can be a transparent photoresistance or a hollow structure, so light can keep original color.
In sum, the disclosed display panels 390 of the above embodiment of the present invention and use its liquid crystal indicator 300 comprises that optical lightscreening layer 340 and colored look change layer 330.Colored look changes floor 330 tool first look commentaries on classics district 331, second look and changes district 332 and penetrating region 333, makes the first color of light L32 produce the second color of light L33 by 331 backs, first look commentaries on classics district by this, also is red light.And make the first color of light L32 change district's 332 back generations the 3rd color of light L34 by second look, also be green light.Light by penetrating region 333 is that transparent photoresistance keeps original color because of penetrating region promptly.
Therefore, the display panels 390 of application present embodiment can overcome the shortcoming of traditional half-penetration half-reflection liquid crystal display panel 100,200.Utilize the design of reflecting plate 251 compared to traditional half-penetration half-reflection liquid crystal display panel 200, but cause the aperture opening ratio problem of smaller, the liquid crystal indicator 300 of present embodiment is to utilize optical lightscreening layer 340 and colored look to change layer 330 to promote light transmittance, and because aperture opening ratio height, liquid crystal indicator 300 also increases light utilization efficiency further, reduces the loss of power.
In sum, though the present invention discloses as above with preferred embodiment, so it is not in order to limit the present invention.The persond having ordinary knowledge in the technical field of the present invention, without departing from the spirit and scope of the present invention, when being used for a variety of modifications and variations.Therefore, protection scope of the present invention is as the criterion when looking the claim person of defining.
Claims (21)
1, a kind of display panels comprises:
One first substrate;
One second substrate with respect to this first substrate setting, and constitutes a plurality of picture elements with this first substrate;
One liquid crystal layer is sealed between this first substrate and this second substrate;
One optical lightscreening layer is arranged on this first substrate, and this optical lightscreening layer is used so that one first color of light is passed through this optical lightscreening layer; And
One colored look changes layer, be arranged at this second substrate, this colour look changes floor tool one first look in each those picture element and changes district, one second look commentaries on classics district and a penetrating region, make this first color of light change the back, district by this and produce one second color of light by this first look, and make this first color of light change back, district generation one the 3rd color of light by this second look
Wherein, this optical lightscreening layer is provided with in regular turn by a first metal layer, a clearance layer and one second metal level and forms.
2, display panels as claimed in claim 1 is characterized in that: this colour look changes layer and is arranged between this first substrate and this second substrate.
3, display panels as claimed in claim 1 is characterized in that: this colour look changes layer and is arranged at the outside of this second substrate with respect to this first substrate.
4, display panels as claimed in claim 1 is characterized in that: this first substrate is a transparency carrier.
5, display panels as claimed in claim 4 is characterized in that: this transparency carrier is a glass substrate, a plastic base or a plastics mantle.
6, display panels as claimed in claim 1 is characterized in that: the material of this first metal layer and this second metal level comprises silver or silver alloy.
7, display panels as claimed in claim 1 is characterized in that: this first metal layer and this second metal layer thickness are 5 nanometer to 60 nanometers.
8, display panels as claimed in claim 1 is characterized in that: this clearance layer is a dielectric film.
9, display panels as claimed in claim 8 is characterized in that: the material of this dielectric film comprises bifluoride magnesium (MgF
2), silicon dioxide (SiO
2), alundum (Al (Al
2O
3), titania (TiO
2), zirconium dioxide (ZrO
2) or niobium pentaoxide (Nb
2O
5).
10, display panels as claimed in claim 9 is characterized in that: when the material of this clearance layer was silicon dioxide, the thickness of this clearance layer was 10 nanometer to 120 nanometers.
11, display panels as claimed in claim 9 is characterized in that: when the material of this clearance layer was titania, the thickness of this clearance layer was 10 nanometer to 55 nanometers.
12, display panels as claimed in claim 1 is characterized in that: this clearance layer is a metallic conduction oxide.
13, display panels as claimed in claim 12, it is characterized in that: the material of this metallic conduction oxide comprises tin indium oxide (indium tin oxide, ITO), indium zinc oxide (indiumzinc oxide, IZO) or aluminum zinc oxide (aluminum zinc oxide, AZO).
14, display panels as claimed in claim 1 is characterized in that: this first color of light is a blue light.
15, display panels as claimed in claim 14 is characterized in that: this second color of light is a red light, and the 3rd color of light is a green light.
16, display panels as claimed in claim 1 is characterized in that: this colour look changes floor and comprises a fluorescent dye (fluorescentdye) in the material that this first look changes district or this second look commentaries on classics district.
17, display panels as claimed in claim 16 is characterized in that: this colour look changes floor and more comprises a resin (binderresin) in the material that this first look changes district or this second look commentaries on classics district.
18, display panels as claimed in claim 1 is characterized in that: it is a transparent photoresistance in the material of this penetrating region that this colour look changes layer.
19, display panels as claimed in claim 1 is characterized in that: it is a hollow structure in this penetrating region that this colour look changes layer.
20, a kind of liquid crystal indicator comprises:
As each described display panels among the claim 1-19; And
One backlight module is in order to provide a back light to this display panels.
21, liquid crystal indicator as claimed in claim 20 is characterized in that: this backlight module is arranged at this first substrate-side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101111923A CN100555040C (en) | 2007-06-14 | 2007-06-14 | Display panels and use its liquid crystal indicator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101111923A CN100555040C (en) | 2007-06-14 | 2007-06-14 | Display panels and use its liquid crystal indicator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101324718A CN101324718A (en) | 2008-12-17 |
| CN100555040C true CN100555040C (en) | 2009-10-28 |
Family
ID=40188316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007101111923A Expired - Fee Related CN100555040C (en) | 2007-06-14 | 2007-06-14 | Display panels and use its liquid crystal indicator |
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| Country | Link |
|---|---|
| CN (1) | CN100555040C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104793392B (en) * | 2015-04-24 | 2017-10-10 | 武汉华星光电技术有限公司 | Liquid crystal display panel and liquid crystal display |
| CN114371790A (en) * | 2020-10-15 | 2022-04-19 | 瀚宇彩晶股份有限公司 | Electromagnetic shielding substrate and display panel |
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2007
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|---|---|
| CN101324718A (en) | 2008-12-17 |
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