CN102621753B - Pixel structure and display panel - Google Patents

Pixel structure and display panel Download PDF

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Publication number
CN102621753B
CN102621753B CN201110035081.5A CN201110035081A CN102621753B CN 102621753 B CN102621753 B CN 102621753B CN 201110035081 A CN201110035081 A CN 201110035081A CN 102621753 B CN102621753 B CN 102621753B
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China
Prior art keywords
electrode
dot structure
substrate
stripes
direction
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CN201110035081.5A
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Chinese (zh)
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CN102621753A (en
Inventor
林宗贤
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联胜(中国)科技有限公司
胜华科技股份有限公司
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Publication of CN102621753A publication Critical patent/CN102621753A/en
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Abstract

The invention provides a pixel structure and a display panel. The pixel structure is configured onto a substrate which is equipped with a first penetration display zone and a reflection display zone. The pixel structure comprises a scanning line, a data line, an active element, a first electrode, a second electrode and an orientation layer. The first electrode is provided with a plurality of first strip-shaped parts which are arranged in the penetration display zone and a plurality of second strip-shaped parts which are arranged in the reflection display zone. Each first strip-shaped part extends along a first direction, and each second strip-shaped part extends along a second direction. The first direction and the second direction are substantially orthogonal to each other. One of the first and second electrodes is electrically connected to the active element, and the other one of the first and second electrodes is connected with a sharing potential. The orientation layer covers the first and second electrodes. One orientation direction of the orientation layer is intersected with the second direction to form an angle of 45 to 85 DEG.

Description

Dot structure and display panel

Technical field

The present invention relates to a kind of dot structure and display panel, particularly relate to and a kind ofly partly to penetrate-dot structure of semi-reflective and display panel.

Background technology

In recent years due to the rise of lcd technology, there is high image quality, membrane transistor liquid crystal display (TFT-LCD) that is lightening, the advantage such as low power consumption and Low emissivity little by little replaces cathode-ray tube (CRT) and becomes the main flow of monitor market.If classified to liquid crystal display according to the Land use systems of light source, then it can be categorized as penetration and two types such as reflective haply.Penetrating LCD is mainly using a backlight (back light) as its display light source, and reflective liquid-crystal display is using front located light source or external light source as its display light source.

But along with the diversification of the application scenario of liquid crystal display, many portable electronic products with liquid crystal display also little by little improve in the demand of Presentation Function.These portable electronic products not only need to have good picture display effect in indoor, also need to maintain suitable picture quality under the external environment with high light simultaneously.Therefore, semi-penetration, semi-reflective liquid crystal display (transflectiveLCD) technology is suggested then.

Generally speaking, semi-penetrating and semi-reflective liquid crystal display panel adopts the design of dual bug hole spacing (dualcell gap) usually, all has good display quality to make penetration region and reflector space.But; the semi-penetrating and semi-reflective liquid crystal display panel with dual bug hole spacing is usually comparatively complicated in making; and each pixel cell often has the not good problem of penetrability between penetration region and reflector space, cause the decline of aperture opening ratio (aperture ratio).

Summary of the invention

The invention provides a kind of dot structure, have and partly penetrate-half reflection Presentation Function.

The invention provides a kind of display panel, have under the framework that the thickness of display medium remains certain and partly penetrate-half reflection Presentation Function.

The present invention proposes a kind of dot structure, is configured on a substrate.Substrate has one and penetrates viewing area and a reflective display region.Dot structure comprises scan line, a data line, an active component, one first electrode, one second electrode and a both alignment layers.Data line is crossing with sweep trace.Active component is electrically connected sweep trace and data line.First electrode has and is positioned at multiple first stripes penetrating viewing area and multiple second stripes being positioned at reflective display region.Each first stripes extends along a first direction, and each second stripes extends along a second direction, and first direction and second direction are orthogonal in fact.The wherein one of the first electrode and the second electrode is electrically connected to active component, and another one is connected to a common potential.Both alignment layers covers the first electrode and the second electrode, and crossing with second direction 45 degree-85 an of alignment direction of both alignment layers is spent.

The present invention separately provides a kind of display panel, and it comprises multiple foregoing dot structure, is configured on aforesaid substrate, a subtend substrate and a display medium.Subtend substrate is relative with aforesaid substrate.Display medium is configured between aforesaid substrate and subtend substrate, and the thickness that display medium is penetrating viewing area is roughly the same with the thickness in reflective display region.

Based on above-mentioned, the present invention makes reflective display region extend along the both direction of perpendicularing to one another with the electrode pattern penetrated in viewing area, and both alignment layers provides single alignment direction.Therefore, dot structure of the present invention can provide different effects penetrating viewing area and reflective display region to display medium, with reflective display region with penetrate viewing area and present desirable display effect.In addition, display panel of the present invention does not need to change the thickness of display medium and just can realize partly penetrating-the Presentation Function of half reflection.

For above-mentioned feature and advantage of the present invention can be become apparent, special embodiment below, and coordinate accompanying drawing to be described in detail below.

Accompanying drawing explanation

Figure 1A is the dot structure of first embodiment of the invention.

Figure 1B is the dot structure 100 of Figure 1A when being applied to display panel, and the penetrance of display panels or reflectivity correspond to a simulative relation of voltage.

Fig. 1 C is the dot structure 100 of Figure 1A when being applied to display panel, and the penetrance when penetrance of display panels or reflectivity take voltage as 7V or reflectivity are for (normalized) after benchmark normalization is corresponding to a simulative relation of voltage.

Fig. 1 D is the dot structure 100 of Figure 1A when being applied to display panel, and the penetrance of display panels or reflectivity correspond to a simulative relation of voltage.

Fig. 1 E is the dot structure 100 of Figure 1A when being applied to display panel, and the penetrance when penetrance of display panels or reflectivity take voltage as 7V or reflectivity are for (normalized) after benchmark normalization is corresponding to a simulative relation of voltage.

The sectional view that the dot structure that Fig. 2 is Figure 1A illustrates along hatching line I-I ' and hatching line II-II '.

Fig. 3 is the schematic diagram of the dot structure of second embodiment of the invention.

Fig. 4 is the dot structure of third embodiment of the invention.

The sectional view that the dot structure that Fig. 5 is Fig. 4 illustrates along hatching line III-III ' and hatching line IV-IV '.

Fig. 6 is the display panel schematic diagram of one embodiment of the invention.

Main element symbol description:

10: substrate 12: penetrate viewing area

14: reflective display region

100,200,300,410: dot structure

110,310: sweep trace 120,320: data line

130,330: active component 140,340: the first electrode

142,342: the first stripes 144,344: the second stripes

150,350: the second electrodes 160,360: both alignment layers

162,362: alignment direction 170,370: reflection horizon

180,380: flatness layer 190,390: λ/4 retardation layer

195: insulation course 352: Article 3 shape portion

354: Article 4 shape portion 400: display panel

420: subtend substrate 430: display medium

440,450: polaroid D1: first direction

D2: second direction d1, d2: thickness

G1: the first distance G2: second distance

I-I ', II-II ', III-III ', IV-IV ': hatching line

W1, W2: width

X1, X2, X3, X4: curve

Embodiment

Figure 1A is the dot structure of first embodiment of the invention, and the sectional view that the dot structure that Fig. 2 is Figure 1A illustrates along hatching line I-I ' and hatching line II-II '.Referring to Figure 1A and Fig. 2, dot structure 100 is configured on a substrate 10.Substrate 10 has one and penetrates viewing area 12 and a reflective display region 14.Dot structure 100 comprises scan line 110, data line 120, active component 130,1 first electrode 140,1 second electrode 150 and a both alignment layers 160.Data line 120 is crossing with sweep trace 110.Active component 130 is electrically connected sweep trace 110 and data line 120.The wherein one of the first electrode 140 and the second electrode 150 is electrically connected to active component 130, and another one is connected to a common potential.Both alignment layers 160 covers the first electrode 140 and the second electrode 150, and crossing with a second direction D2 45 degree-85 an of alignment direction 162 of both alignment layers 160 is spent.In one embodiment, alignment direction 162 can be crossing with second direction D2 60 degree.

In detail, the first electrode 140 has and is positioned at multiple first stripes 142 penetrating viewing area 12 and multiple second stripes 144 being positioned at reflective display region 14.Each first stripes 142 extends along first direction D1, and each second strip 144 extends along a second direction D2, and first direction D1 and second direction D2 is orthogonal in fact.In the present embodiment, first direction D1 and second direction D2 is respectively vertical direction and horizontal direction, and data line 120 is substantially parallel to first direction D1, and the electric field influence that the signal intensity that the second electrode (being often common electrode) can cover data line causes.Thus, the phenomenon of bad display is less likely to occur between data line 120 and the first electrode 140.

In addition, in order to make reflective display region 14 provide reflective display function, dot structure 100 also includes a reflection horizon 170.Reflection horizon 170 is configured in reflective display region 14, and position is in the first electrode 140 and the second electrode 150 side close to substrate 10.That is, extraneous light can first be irradiated towards reflection horizon 170 by the first electrode 140 again and carry out reflective display.Certainly, the present invention does not limit the allocation position in reflection horizon 170 especially.In other examples, reflection horizon 170 optionally can be configured at the opposite side of substrate 10.

Further, in the present embodiment, the second electrode 150 is configured between the first electrode 140 and substrate 10, and dot structure 100 also comprises the flatness layer 180 be configured between the first electrode 140 and the second electrode 150.First electrode 140 lays respectively at the relative both sides of flatness layer 180 with the second electrode 150.Second electrode 150 can come out by the space between the first stripes 142 and the space between the second stripes 144.During dot structure 100 display frame, the first electrode 140 is bestowed different voltage respectively from the second electrode 150, therefore can be formed with transverse electric field between the first electrode 140 and the second electrode 150 come out to drive display medium to show.In brief, dot structure 100 is the Pixel Design that a kind of fringe field switches (Fringe Field Switch, FFS) type.

When the dot structure 100 that Figure 1B and Fig. 1 D is respectively Figure 1A is applied to display panel, the penetrance of display panels or reflectivity correspond to a simulative relation of voltage, and the dot structure 100 that Fig. 1 C and Fig. 1 E is respectively Figure 1A is when being applied to display panel, the penetrance when penetrance of display panels or reflectivity take voltage as 7V or reflectivity are for (normalized) after benchmark normalization is corresponding to a simulative relation of voltage.In this simulation process, specific inductive capacity Δ ε=+ 8.2 of the liquid crystal material that display panels uses, the Δ nd (phase difference value) of liquid crystal layer is such as 0.41 μm, and liquid crystal layer is all 2 degree at the tilt angle that upper and lower both sides have.Crossing 60 degree of the second direction D2 that alignment direction such as illustrates with Figure 1A.Display panels uses the monochromatic light of the centre wavelength (550nm) of visible-range as simulation light.

In Figure 1B and Fig. 1 C, the flatness layer 180 of dot structure 100 is respectively 0.2 μm and 0.1 μm at the thickness penetrating viewing area 12 and reflective display region 14, and the width W 1 of each first stripes 142 is all 3 μm with the width W 2 of each second stripes 144.In addition, one first distance G1 between adjacent two first the stripes 142 and second distance G2 between adjacent two second stripes 144 is all 5 μm.Curve X1 presents the variation tendency of penetrance with voltage of display panel, and curve X2 presents the variation tendency of reflectivity with voltage of display panel.Can be known by curve X1 and curve X2 and know, under identical electrode pattern design, the present embodiment, by the adjustment of alignment direction and flatness layer 180 thickness, can make display panels all present roughly the same brightness change penetrating under display mode or under reflection display mode.That is, penetrate viewing area 12 and reflective display region 14 and can present roughly the same gray scale curve (gamma curve).

In addition, in Fig. 1 D and Fig. 1 E, the flatness layer 180 of dot structure 100 is all 0.1 μm at the thickness penetrating viewing area 12 and reflective display region 14, and the width W 1 of each first stripes 142 is all 3 μm with the width W 2 of each second stripes 144.In addition, one first distance G1 between adjacent two first the stripes 142 and second distance G2 between adjacent two second stripes 144 is respectively 3 μm and 5 μm.Curve X3 presents the variation tendency of penetrance with voltage of display panel, and curve X4 presents the variation tendency of reflectivity with voltage of display panel.Relation between comparison curves X3 and curve X4 and the relation between curve X1 and curve X2, can find that curve X3 and curve X4 are essentially two almost consistent curves of trend.

It can thus be appreciated that the design of electrode pattern can affect the distribution scenario of electric field, particularly for the Pixel Design of fringe field switch type.Therefore, penetrate viewing area 12 different from the display effect of reflective display region 14 demand under, in the first electrode 140, the first stripes 142 can have different design from the second stripes 144.For example, one first distance G1 between adjacent two first stripes 142 can be not equal to the second distance G2 between adjacent two second stripes 144.Or the width W 1 of each first stripes 142 is optionally not equal to the width W 2 of each second stripes 144.

In the present embodiment, flatness layer 180 provides a smooth surface to make dot structure 100 to penetrate viewing area 12 roughly the same with the thickness of reflective display region 14.In addition, in order to adjust the display effect penetrating viewing area 12 and reflective display region 14, flatness layer 180 is such as be greater than the thickness d 2 in reflective display region 14 in the thickness d 1 penetrating viewing area 12.Certainly, the present invention is not limited thereto, in other examples, flatness layer 180 can have the thickness of uniformity, that is thickness d 1 also optionally equals thickness d 2.

In addition, dot structure 100 also comprises λ/4 retardation layer 190.When dot structure 100 is applied to a display panel, the upper and lower surface of display panel is such as pasted with Polarizer and lower Polarizer respectively, and the penetrating shaft of upper and lower Polarizer is orthogonal.Now, λ/4 retardation layer 190 slow axis be configured at upper plate polaroid on display panel penetrate axle clamp 45 degree.In addition, be configured in reflective display region 14 with dot structure 100, λ/4 retardation layer 190, and be positioned at the first electrode 140 and the second electrode 150 side close to substrate 10.Specifically, λ/4 retardation layer 190 is configured between reflection horizon 170 and flatness layer 180, and it is provided with the dot structure 100 helping normally black (normally black) and maintains black picture in the standby state.Penetrating in viewing area 12, dot structure 100 is such as also configured with an insulation course 195.Insulation course 195 is between the second electrode 150 and substrate 10.

Sweep trace 110 is be configured in the edge of dot structure 100 for example in the present embodiment, but the present invention is not limited thereto.Fig. 3 is the schematic diagram of the dot structure of second embodiment of the invention.Please refer to Fig. 3, dot structure 200 is similar with dot structure 100, and it is configured on substrate 10.Dot structure 200 is the allocation position of sweep trace 110 with the Main Differences of dot structure 100.In the present embodiment, sweep trace 110 is penetrating between viewing area 12 and reflective display region 14, and the first electrode 140 is such as across sweep trace 110.

Specifically, the first stripes 142 in the first electrode 140 and the second stripes 144 difference status are in the relative both sides of sweep trace 110.Sweep trace 110 can say it is define reflective display region 14 and the boundary line penetrating viewing area 12.Generally speaking, sweep trace 110 is made by lighttight conductive material.Reflective display region 14 and penetrate viewing area 12 boundary line on occur display effect uneven or display quality is not good time, the region that the arranging of sweep trace 110 can cover these bad display and improve the display quality that dot structure 200 presents.

Fig. 4 is the dot structure of third embodiment of the invention, and the sectional view that the dot structure that Fig. 5 is Fig. 4 illustrates along hatching line III-III ' and hatching line IV-IV '.Referring to Fig. 4 and Fig. 5, dot structure 300 is configured on a substrate 10.Substrate 10 has one and penetrates viewing area 12 and a reflective display region 14.Dot structure 300 comprises scan line 310, data line 320, active component 330,1 first electrode 340,1 second electrode 350 and a both alignment layers 360.Data line 320 is crossing with sweep trace 310.Active component 330 is electrically connected sweep trace 310 and data line 320.The wherein one of the first electrode 340 and the second electrode 350 is electrically connected to active component 130, and another one is connected to a common potential.Both alignment layers 360 covers the first electrode 340 and the second electrode 350, and crossing with a second direction D2 45 degree-85 an of alignment direction 362 of both alignment layers 360 is spent.It is worth mentioning that, no matter penetrating viewing area 12 or reflective display region 14, the alignment direction 362 of both alignment layers 360 is all identical.Therefore, the present embodiment need not form multiple alignment direction with the processing procedure of complexity.

In detail, the first electrode 340 has and is positioned at multiple first stripes 342 penetrating viewing area 12 and multiple second stripes 344 being positioned at reflective display region 14.Each first stripes 342 extends along first direction D1, and each second strip 344 extends along a second direction D2, and first direction D1 and second direction D2 is orthogonal in fact.In the present embodiment, first direction D1 and second direction D2 is respectively vertical direction and horizontal direction, and data line 320 is substantially parallel to first direction D1.In addition, the second electrode 350 also has and is positioned at the multiple Article 3 shape portion 352 penetrating viewing area 12 and the multiple Article 4 shape portions 354 being positioned at reflective display region 14.First stripes 342 alternately configures with Article 3 shape portion 352, and the second stripes 344 alternately configures with Article 4 shape portion 354.In brief, the first electrode 340 of dot structure 300 and the second electrode 350 are configured on same plane.

In order to make reflective display region 14 provide reflective display function, dot structure 300 also includes a reflection horizon 370.Reflection horizon 370 is configured in reflective display region 14, and position is in the first electrode 340 and the second electrode 350 side close to substrate 10.That is, user is that direction along the first electrode 340 towards reflection horizon 370 is watched when watching the picture shown by dot structure 300.Certainly, the present invention does not limit the allocation position in reflection horizon 370 especially.In other examples, reflection horizon 370 optionally can be configured at the opposite side of substrate 10.

Further, in the present embodiment, dot structure 300 also comprises the flatness layer 380 be configured between substrate 10 and the first electrode 340, second electrode 350.Flatness layer 380 provides a smooth surface that the first electrode 340 and the second electrode 350 are configured on same plane, and makes dot structure 300 to penetrate viewing area 12 roughly the same with the thickness of reflective display region 14.With the present embodiment, flatness layer 380 is such as be greater than the thickness d 2 in reflective display region 14 in the thickness d 1 penetrating viewing area 12.Certainly, the present invention is not limited thereto, in other examples, flatness layer 380 can have the thickness of uniformity, that is thickness d 1 also optionally equals thickness d 2.

In addition, dot structure 300 also comprises λ/4 retardation layer 390, it is configured in reflective display region 14, and between reflection horizon 370 and flatness layer 380, the dot structure 300 helping normally black (normally black) that is provided with of λ/4 retardation layer 390 maintains black picture in the standby state.In one embodiment, when dot structure 300 is applied in a display panel (not shown), and the upper and lower surface of display panel (not shown) is when being pasted with upper and lower polaroid respectively, the slow axis of λ/4 retardation layer 390 such as can 45 degree angles crossing with the penetrating shaft of upper polaroid.In addition, the penetrating shaft of upper and lower polaroid is such as perpendicular to one another.Generally speaking, dot structure 300 and the Main Differences of aforementioned dot structure 100 are the allocation position of electrode.Therefore, in the another kind of embodiment of dot structure 300, sweep trace 310 is optionally configured at and penetrates between viewing area 12 and reflective display region 14.

Fig. 6 is the display panel schematic diagram of one embodiment of the invention.Please refer to Fig. 6, display panel 400 comprises substrate 10, multiple dot structure 410 be configured on substrate 10, subtend substrate 420, display medium 430 and polaroid 440,450.Display medium 430 is configured between substrate 10 and subtend substrate 420, and polaroid 440,450 is configured at the outermost of display panel 400.The dot structure 410 that substrate 10 configures can be selected from the dot structure 100,200 or 300 described by aforementioned multiple embodiment, or be selected from by dot structure 100,200 or 300 the dot structure that derives.In addition, display medium 430 is such as liquid crystal material.Subtend substrate 420 selectively can also be provided with further chromatic filter layer (not shown) to realize the display effect of colouring.Furthermore, the upper and lower surface of display panel 400 is optionally pasted with upper and lower polaroid (not shown).

It is worth mentioning that, aforesaid dot structure 100,200,300 all has roughly the same thickness penetrating viewing area 12 and reflective display region 14, thus the display medium 430 of the present embodiment has in fact homogeneous thickness with reflective display region 14 penetrating viewing area 12, uses and makes display panel 400 have desirable display quality.In other words, display panel 400 need not make reflective display effect and penetrate display effect to reach unanimity by the design in multiple gap.Not only the complicacy that this measure can reduce manufacturing process also can avoid display medium 430 to occur because of variation in thickness to show uneven situation.

In sum, the invention enables the electrode penetrating viewing area and reflective display region to arrange along orthogonal bearing of trend, and make both alignment layers provide identical alignment direction with reflective display region penetrating viewing area.Therefore, dot structure is penetrating in viewing area and reflective display region and can provide desirable display effect respectively.Furthermore, dot structure of the present invention is applied in display panel, can realizes partly penetrating-the Presentation Function of half reflection under the display medium design of homogeneous thickness.Reach the effect that processing procedure is simple and display effect is good by this.

Although the present invention with embodiment disclose as above, so itself and be not used to limit the present invention, any person of an ordinary skill in the technical field, when doing a little change and retouching, and does not depart from the spirit and scope of the present invention.

Claims (10)

1. a dot structure, is configured on a substrate, and this substrate has one and penetrates viewing area and a reflective display region, and this dot structure comprises:
Scan line;
One data line, crossing with this sweep trace;
One active component, is electrically connected this sweep trace and this data line;
One first electrode, have and be positioned at this and penetrate multiple first stripes of viewing area and be positioned at multiple second stripes of this reflective display region, respectively this first stripes extends along a first direction, respectively this second stripes extends along a second direction, and this first direction and this second direction orthogonal in fact;
One second electrode, the wherein one of this first electrode and this second electrode is electrically connected to this active component, and another one is connected to a common potential; And
One both alignment layers, covers this first electrode and this second electrode, and crossing with this second direction 45 degree-85 an of alignment direction of this both alignment layers is spent, and this alignment direction penetrates viewing area with all identical in this reflective display region at this.
2. dot structure according to claim 1, wherein also comprise a reflection horizon and λ/4 retardation layer, this reflection horizon is configured in this reflective display region, and be positioned at this first electrode and this second electrode side close to this substrate, this λ/4 retardation layer is configured in this reflective display region, and is positioned at this first electrode and this second electrode side close to this substrate.
3. dot structure according to claim 1, wherein also comprises a flatness layer, is configured between this first electrode and this substrate.
4. dot structure according to claim 3, wherein this second electrode is between this flatness layer and this substrate, and this flatness layer penetrate that viewing area has at this one first be highly greater than one second height had in this reflective display region.
5. dot structure according to claim 3, wherein also comprises an insulation course, is configured at this and penetrates in viewing area, and this insulation course is between this second electrode and this substrate.
6. dot structure according to claim 3, wherein this first electrode and this second electrode copline in fact, wherein this second electrode has the multiple Article 4 shape portions being positioned at this multiple Article 3 shape portion penetrating viewing area and being positioned at this reflective display region, and those first stripes and those Article 3 shape portions alternately configure, and those second stripes and those Article 4 shape portions alternately configure.
7. dot structure according to claim 1, one first distance wherein between adjacent two first stripes is not equal to the second distance between adjacent two second stripes.
8. dot structure according to claim 1, wherein respectively the width of this first stripes is not equal to the width of respectively this second stripes.
9. dot structure according to claim 1, wherein this sweep trace penetrates between viewing area and this reflective display region at this, and this first electrode is across this sweep trace.
10. a display panel, comprising:
Multiple dot structure as claimed in claim 1, is configured on substrate;
One subtend substrate is relative with this substrate; And
One display medium, is configured between this substrate and this subtend substrate, and the thickness that this display medium is penetrating viewing area is identical with the thickness in reflective display region.
CN201110035081.5A 2011-01-28 2011-01-28 Pixel structure and display panel CN102621753B (en)

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CN105204246B (en) * 2015-10-29 2018-11-23 武汉华星光电技术有限公司 Transflective liquid crystal display panel
CN106547153A (en) * 2016-12-07 2017-03-29 深圳市华星光电技术有限公司 A kind of display panels and liquid crystal indicator
TWI644298B (en) * 2017-11-29 2018-12-11 友達光電股份有限公司 Substrate of pixel structures and display panel thereof
CN109188784A (en) * 2018-10-29 2019-01-11 合肥鑫晟光电科技有限公司 Display base plate and preparation method thereof, display device
CN110109289A (en) * 2019-05-06 2019-08-09 深圳市华星光电技术有限公司 Transflective liquid crystal display panel and semitransparent semi-reflective liquid crystal display device

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