CN102707510B - Color film baseplate, display panel, display and method for producing color film baseplate - Google Patents

Color film baseplate, display panel, display and method for producing color film baseplate Download PDF

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Publication number
CN102707510B
CN102707510B CN201110130812.4A CN201110130812A CN102707510B CN 102707510 B CN102707510 B CN 102707510B CN 201110130812 A CN201110130812 A CN 201110130812A CN 102707510 B CN102707510 B CN 102707510B
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China
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color
pixel region
region
changeable colour
membrane substrates
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CN201110130812.4A
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Chinese (zh)
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CN102707510A (en
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胡望
张卓
王刚
曾庆慧
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京东方科技集团股份有限公司
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Abstract

The invention provides a color film baseplate, a display panel, a display and a method for producing the color film baseplate, the color film baseplate comprises a baseplate and a color film layer which is formed on the baseplate, wherein the color film layer comprises a pixel area with at least one color and a variable color pixel area, and the color of the variable color pixel area can be changed under the control of an excitation source. When the color film baseplate is used, the light transmittance of a backlight can be improved according to the practical display requirements, so the energy sources are saved or the color saturation of a display panel is increased.

Description

The method for making of color membrane substrates, display panel, display and color membrane substrates

Technical field

The present invention relates to display technique field, relate in particular to the method for making of a kind of color membrane substrates, display panel, display and color membrane substrates.

Background technology

Display panels comprises: array base palte (Array substrate), color membrane substrates (CF substrate) and be filled in liquid crystal material between the two.On array base palte and color membrane substrates, form respectively pixel electrode and common electrode, form electric field powering up between latter two electrode, by controlling the variation of electric field intensity, can control the anglec of rotation of liquid crystal molecule, thereby control the light transmittance of backlight.Most display panels be on color membrane substrates, use there is red (R), green (G), the color rete of blue (B) pixel region carries out colour filter, by regulating the transmitance of backlight, can obtain some GTGs of different colours red, green, blue, by colour mixture addition, realize versicolor colored demonstration.

Be illustrated in figure 1 the planar structure schematic diagram of color rete of the prior art, color rete comprises red pixel district (R), green pixel district (G) and blue pixel district (B), red pixel district, green pixel district and blue pixel district can only pass through red light, green light and blue ray respectively, that is to say, only have 1/3rd backlight light to be utilized, this reduces backlight efficiency greatly, in addition, only red, green, blue is carried out to colour mixture addition, be difficult in some cases reach the color saturation of expectation.

Summary of the invention

In view of this, the invention provides the method for making of a kind of color membrane substrates, display panel, display and color membrane substrates, the light transmittance that can improve backlight according to actual displayed demand is to save the color saturation of the energy or increase display panel.

For addressing the above problem, the invention provides a kind of color membrane substrates, comprise: substrate and be formed on the color rete on described substrate, described color rete comprises: the pixel region of at least one color and changeable colour pixel region, described changeable colour pixel region can change color under the control of driving source.

Preferably, described driving source is electric field, and described color membrane substrates also comprises: the first electrode layer, is arranged at the below of described changeable colour pixel region; The second electrode lay, is arranged at the top of described color rete; Wherein, after described the first electrode layer and described the second electrode lay power up, between produce electric field.

Preferably, described color membrane substrates also comprises: the first screed-coat, and poor for eliminating the section existing between the region, pixel region of described color and region, described changeable colour pixel region, be arranged between described color rete and described the second electrode lay.

The height sum of described changeable colour pixel region and described the first electrode layer is lower than the height of the pixel region of described color, preferably, described color membrane substrates also comprises: the second screed-coat, section poor for what exist between the region, pixel region of eliminating described color and region, described changeable colour pixel region, be arranged between described substrate and described the first electrode layer.

The height sum of described changeable colour pixel region and described the first electrode layer is higher than the height of the pixel region of described color, preferably, described color membrane substrates also comprises: the 3rd screed-coat, section poor for what exist between the region, pixel region of eliminating described color and region, described changeable colour pixel region, be arranged between the pixel region and described the second electrode lay of described color.

Preferably, the pixel region of described at least one color comprise in red pixel district, green pixel district or blue pixel district one of at least.

Preferably, described changeable colour pixel region is made by the electrochromic material that can switch between Transparent color and yellow under the control of electric field.

The present invention also provides a kind of display panel, comprise array base palte, color membrane substrates and be filled in the liquid crystal material between described display substrate and described color membrane substrates, described color membrane substrates comprises: substrate and be formed on the color rete on described substrate, described color rete comprises: the pixel region of at least one color and changeable colour pixel region, described changeable colour pixel region can change color under the control of driving source.

The present invention also provides a kind of display, comprise display panel and be coupled to the driving circuit of described display panel, described display panel comprises array base palte, color membrane substrates and is filled in the liquid crystal material between described display substrate and described color membrane substrates, described color membrane substrates comprises: substrate and be formed on the color rete on described substrate, described color rete comprises: the pixel region of at least one color and changeable colour pixel region, described changeable colour pixel region can change color under the control of driving source.

The present invention also provides a kind of method for making of color membrane substrates, comprising: on substrate, form color rete, described color rete comprises: the pixel region of at least one color and changeable colour pixel region, described changeable colour pixel region can change color under the control of driving source.

Preferably, described driving source is electric field; Describedly also comprise form color rete on substrate before: on described substrate, form the first electrode layer; Describedly on substrate, form color rete and be specially: on described substrate, form the pixel region of described color, above described the first electrode layer, form described changeable colour pixel region; Describedly also comprise form color rete on substrate after: above described color rete, form the second electrode lay, wherein, after described the first electrode layer and described the second electrode lay power up, between produce electric field.

Preferably, describedly before forming the second electrode lay above described color rete, also comprise: above described color rete, be formed for eliminating the first poor screed-coat of section existing between the region, pixel region of described color and region, described changeable colour pixel region.

The height sum of described changeable colour pixel region and described the first electrode layer is lower than the height of the pixel region of described color; Preferably, describedly also comprise form the first electrode layer on described substrate before: on described substrate, be formed for eliminating the second poor screed-coat of section existing between the region, pixel region of described color and region, described changeable colour pixel region; Described first electrode layer that forms on described substrate is specially: on described the second screed-coat, form described the first electrode layer.

The height sum of described changeable colour pixel region and described the first electrode layer is higher than the height of the pixel region of described color; Preferably, describedly before forming the second electrode lay above described color rete, also comprise: above the pixel region of described color, be formed for eliminating the 3rd poor screed-coat of section existing between the region, pixel region of described color and region, described changeable colour pixel region; Describedly be specially forming the second electrode lay above described color rete: above described the 3rd screed-coat and described changeable colour pixel region, form described the second electrode lay.

The present invention has following beneficial effect:

In the color rete of color membrane substrates, increased changeable colour pixel region, changeable colour pixel region can be switched under the effect of driving source between different colours, for example between Transparent color and yellow, switch, when changeable colour pixel region is switched to Transparent color, can improve according to actual displayed demand the light percent of pass of backlight, under the condition of equal brightness requirement, can save the energy of backlight; For example, when changeable colour pixel region is switched to other colors (yellow), can improve the color saturation of display panel, increase visual effect.

Accompanying drawing explanation

Fig. 1 is the planar structure schematic diagram of color rete of the prior art;

Fig. 2 is a cross section structure schematic diagram of color membrane substrates of the present invention;

Fig. 3 is a planar structure schematic diagram of color rete of the present invention;

Fig. 4 is another planar structure schematic diagram of color rete of the present invention;

Fig. 5 is another cross section structure schematic diagram of color membrane substrates of the present invention;

Fig. 6 is the another cross section structure schematic diagram of color membrane substrates of the present invention;

Fig. 7 is a cross section structure schematic diagram again of color membrane substrates of the present invention;

Fig. 8 is a schematic flow sheet of the method for making of color membrane substrates of the present invention.

Embodiment

Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.

The invention provides a kind of color membrane substrates, described color membrane substrates is applied in a display panel, comprise: substrate and be formed on the color rete on described substrate, described color rete comprises pixel region and the changeable colour pixel region of at least one color, and described changeable colour pixel region can change color under the control of driving source.

The pixel region of described color can be the pixel region of red pixel district, green pixel district, blue pixel district or other colors.The color rete of most of color membrane substrates comprises: the pixel region of red pixel district, the three kinds of colors in green pixel district and blue pixel district, therefore, in following examples, take described color rete comprises: red pixel district, green pixel district, blue pixel district and changeable colour pixel region describe as example.

Described driving source can polytype driving source, according to the working mechanism of described changeable colour pixel region, determine, when the working mechanism of described changeable colour pixel region is different, described driving source is different, the structure of described color membrane substrates is not identical yet, will for example several embodiments of described color membrane substrates be described below.

(1) embodiment one

Described changeable colour pixel region can be made by the electrochromic material that can change color under the control of electric field, and now, described driving source is electric field, needs to have the element that can produce the required electric field in described changeable colour pixel region on described color membrane substrates.

Based on foregoing description, described color membrane substrates can also comprise: the first electrode layer and the second electrode lay, described the first electrode layer is arranged at the below of described changeable colour pixel region, described the second electrode lay is arranged at the top of described changeable colour pixel region, after described the first electrode layer and described the second electrode lay power up, between produce electric field, described changeable colour pixel region, between described the first electrode layer and described the second electrode lay, changes color under the control of the electric field that can produce at described the first electrode layer and described the second electrode lay.

For can with the array base palte of display panel on common electrode effect, produce for controlling the electric field of liquid crystal molecule rotation, the top of the color rete of described color membrane substrates also needs to have pixel electrode, preferably, above-mentioned the second electrode lay can wholely cover the top of described color rete, as described pixel electrode.

(2) embodiment two

Described changeable colour pixel region can also be made by the off-color material that can change color under the control of electric current, now, described driving source is electric current, described changeable colour pixel region can be electrically connected to an electric current output element of outside, receive the electric current of described electric current output element output, and change color according to the intensity of electric current.

(3) embodiment three

Described changeable colour pixel region can also be made by the off-color material that can change color under the control in magnetic field, and now, described driving source is magnetic field, needs to have the element that can produce required magnetic field, described changeable colour pixel region on described color membrane substrates.

Described changeable colour pixel region is not limited to above-mentioned several, can be made by any material that can change color under the effect of driving source.In following embodiment, all with described changeable colour pixel region, by electricity, cause changeable material and be made for example and describe.

In order to improve the display quality of display panel, conventionally also black matrix (BM) need to be set on described color membrane substrates, certainly, also black matrix can be set on described color membrane substrates, but by black arranged in matrix on the array base palte of display panel.Below in embodiment, all take and black matrix is set on described color membrane substrates describes as example.

Be illustrated in figure 2 a cross section structure schematic diagram of color membrane substrates of the present invention, described color membrane substrates is applied in a display panel, and described color membrane substrates comprises: substrate 201, be formed on the first electrode layer 202, black matrix 203, red pixel district 204, green pixel district 205, blue pixel district 206, changeable colour pixel region 207 and the second electrode lay 208 on described substrate 201.Described red pixel district 204, green pixel district 205, the common color rete that forms described color membrane substrates in blue pixel district 206 and described changeable colour pixel region 207.Described the first electrode layer 202 is arranged at the below of described changeable colour pixel region 207, and described the second electrode lay 208 is arranged at the top of described black matrix 203 and described color rete, and described the second electrode lay 208 is the pixel electrode uses as described color membrane substrates.

It should be noted that said above and below in the present invention, is to determine according to the sequencing of manufacture craft, overlapped two-layer in, rear formation be positioned at the top first forming.That is to say, the described substrate 201 in above-described embodiment is positioned at below, and described the second electrode lay 208 is positioned at the top.

Aforesaid substrate 201 can be made by glass or other materials, described the first electrode layer 202 and the second electrode lay 208 are normally made by ITO (tin indium oxide) conductive material, described red pixel district 204, green pixel district 205He blue pixel district 206 is normally made by resin material, described changeable colour pixel region 207 is made by the electrochromic material that can change color under the control of electric field, described electrochromic material can be inorganic electrochromic material, WO3 (tungstic acid) for example, MO3 (molybdenum trioxide), the transition metal oxides such as NiO (nickel protoxide) etc., also can be organic electrochromic material, polyaniline for example, polythiophene and purpurine etc. have the molecule of conjugated system etc., different types of electrochromic material is applicable to different process conditions.

From above-described embodiment, can find out, described changeable colour pixel region 207 is between described the first electrode layer 202 and described the second electrode lay 208, described the first electrode layer 202 and described the second electrode lay 208 are after powering up, can form electric field between the two, by controlling the variation of electric field intensity, can control described changeable colour pixel region 207 and change color.

As everyone knows, compare with the material of other colors, the transmittance of transparent material is the highest, therefore, in order to improve the light transmittance of backlight, preferably, the changeable colour pixel region 207 in the present invention can be made by the electrochromic material that can switch between Transparent color or other colors under the control of electric field.

Through experiment, learn, after yellow and the addition of red, green, blue three primary colours colour mixture, can effectively improve the color saturation of display panel, therefore, preferably, the changeable colour pixel region 207 in the present invention can be made by the electrochromic material that can switch between Transparent color or yellow under the control of electric field.

Color membrane substrates in following examples, is all made for example with described changeable colour pixel region 207 by the electrochromic material that can switch between Transparent color (W) and yellow (Y) under the control of electric field and describes.

(W & Y) can be various arrangement mode for red pixel district (R) in color rete of the present invention, green pixel district (G), blue pixel district (B) and changeable colour pixel region.The planar structure schematic diagram of the color membrane substrates in Fig. 2 as shown in Figure 3, as can be seen from Figure 3, described red pixel district, green pixel district, blue pixel district and changeable colour pixel region are stripe-arrangement, certainly, also can be other arrangement modes, the square arrangement mode in Fig. 4 for example, or, can be also arrangement mode of mosaic etc.Certainly, the arrangement mode of the red pixel district in described color rete, green pixel district, blue pixel district and changeable colour pixel region is not limited to above-mentioned several, and reasonably how much arrangement architectures all should be adopted arbitrarily.

As can be seen from Figure 2, with described red pixel district 204, green pixel district 205, blue pixel district 206 compares, the lower zone of described changeable colour pixel region 207 also has described the first electrode layer 202, therefore may cause region and the described red pixel district 204 at 207 places, described changeable colour pixel region, green pixel district 205, between the region at 206 places, blue pixel district, occur that section is poor (generally, described red pixel district 204, green pixel district 205, blue pixel district 206, height between black matrix 203 is all identical), the poor existence of section can make the cell gap (liquid crystal space) of display panel inhomogeneous, cause occurring mura (brightness shows uneven) problem.

For the section of eliminating between the region at described red pixel district 204, green pixel district 205,206 places, blue pixel district and 207 regions, described changeable colour pixel region poor, as shown in Figure 5, can between described color rete, described black matrix 203 and described the second electrode lay 208, the first screed-coat 209 be set, described the first screed-coat 209 can adopt transparent resin material or other transparent materials to make.

Electrochromic material of a great variety, the characteristics such as the color and luster light and shade of different electrochromic materials, light transmission rate are not identical yet.If the yellow chrominance of electrochromic material is higher, use thinner electrochromic material can reach color displays requirement, now, the height sum of described changeable colour pixel region 207 and described the first electrode layer 202 may be lower than the height in described red pixel district, green pixel district, blue pixel district, thereby causes occurring that section is poor between the region at the region at 207 places, described changeable colour pixel region and described red pixel district 204, green pixel district 205,206 places, blue pixel district.

For eliminate between the region at described red pixel district 204, green pixel district 205,206 places, blue pixel district and the region at 207 places, described changeable colour pixel region section poor, as shown in Figure 6, can between described substrate 201 and described the first electrode layer 202, the second screed-coat 210 be set, described the second screed-coat 210 can adopt water white transparency color blocking material or other transparent materials to make.Now, the height of 207 regions, described changeable colour pixel region, equals the height of described red pixel district 204, green pixel district 205,206 regions, blue pixel district.

Described the second screed-coat 210 is identical with the effect of above-mentioned the first screed-coat 209, all that section in order to eliminate between the region at described red pixel district 204, green pixel district 205,206 places, blue pixel district and the region at 207 places, described changeable colour pixel region is poor, so specific implementation time employing a kind of mode wherein.

The yellow chrominance of the electrochromic material using when described changeable colour pixel region 207 is lower, need to use thicker electrochromic material just can reach color displays requirement, now, the height sum of described changeable colour pixel region 207 and described the first electrode layer 202 may be higher than the height in described red pixel district 204, green pixel district 205, blue pixel district 206, thus cause occurring between the region at 207 places, described changeable colour pixel region and the region at described red pixel district 204, green pixel district 205,206 places, blue pixel district section poor.

For eliminate between the region at described red pixel district 204, green pixel district 205,206 places, blue pixel district and the region at 207 places, described changeable colour pixel region section poor, as shown in Figure 7, can between described red pixel district 204, green pixel district 205, blue pixel district 206, described black matrix 203 and described the second electrode lay 208, the 3rd screed-coat 211 be set, described the 3rd screed-coat 211 can adopt water white transparency color blocking material or other transparent materials to make.Now, the height of 207 regions, described changeable colour pixel region, equals the height of described red pixel district 204, green pixel district 205,206 regions, blue pixel district.

Described the 3rd screed-coat 211 is identical with the effect of above-mentioned the first screed-coat 209, all that section in order to eliminate between the region at described red pixel district 204, green pixel district 205,206 places, blue pixel district and the region at 207 places, described changeable colour pixel region is poor, so specific implementation time employing a kind of implementation wherein.

The color membrane substrates providing by above-described embodiment, in the color rete of color membrane substrates, increased changeable colour pixel region, changeable colour pixel region can be switched under the effect of driving source between different colours, for example between Transparent color and yellow, switch, when changeable colour pixel region is switched to Transparent color, the light percent of pass of backlight can be improved, under the condition of equal brightness requirement, the energy of backlight can be saved; For example, when changeable colour pixel region is switched to other colors (yellow), can improve the color saturation of display panel, increase visual effect.

The present invention also provides a kind of display panel, described display panel comprises array base palte, color membrane substrates and is filled in the liquid crystal material between described display substrate and described color membrane substrates, described color membrane substrates comprises: substrate and be formed on the color rete on described substrate, described color rete comprises pixel region and the changeable colour pixel region of at least one color, and described changeable colour pixel region can change color under the control of driving source.

The pixel region of described color can be the pixel region of red pixel district, green pixel district, blue pixel district or other colors.

Described driving source can polytype driving source (for example, electric field, electric current, magnetic field etc.), according to the working mechanism of described changeable colour pixel region, determine, when the working mechanism difference of described changeable colour pixel region, described driving source is different, and the structure of described color membrane substrates is not identical yet.

When described changeable colour pixel region is made by the electrochromic material that changes color under can the control at electric field, described driving source is electric field, described color membrane substrates can also comprise: the first electrode layer and the second electrode lay, described the first electrode layer is arranged at the below of described changeable colour pixel region, described the second electrode lay is arranged at the top of described changeable colour pixel region, after described the first electrode layer and described the second electrode lay power up, between produce electric field, described changeable colour pixel region is between described the first electrode layer and described the second electrode lay, under the control of the electric field that can produce at described the first electrode layer and described the second electrode lay, change color.For can with the array base palte of display panel on common electrode effect, produce for controlling the electric field of liquid crystal molecule rotation, the top of the color rete of described color membrane substrates also needs to have pixel electrode, preferably, above-mentioned the second electrode lay can wholely cover the top of described color rete, as described pixel electrode.

Color membrane substrates in described display panel is identical with the structure of color membrane substrates in above-described embodiment, at this, describes no longer one by one.

The embodiment of the present invention also provides a kind of display, described display comprises a display panel, described display panel comprises: array base palte, color membrane substrates and be filled in the liquid crystal material between described display substrate and described color membrane substrates, described color membrane substrates comprises: substrate and be formed on the color rete on described substrate, described color rete comprises pixel region and the changeable colour pixel region of at least one color, and described changeable colour pixel region can change color under the control of driving source.

The pixel region of described color can be the pixel region of red pixel district, green pixel district, blue pixel district or other colors.

Described driving source can polytype driving source (for example, electric field, electric current, magnetic field etc.), according to the working mechanism of described changeable colour pixel region, determine, when the working mechanism difference of described changeable colour pixel region, described driving source is different, and the structure of described color membrane substrates is not identical yet.

When described changeable colour pixel region is made by the electrochromic material that changes color under can the control at electric field, described driving source is electric field, described color membrane substrates can also comprise: the first electrode layer and the second electrode lay, described the first electrode layer is arranged at the below of described changeable colour pixel region, described the second electrode lay is arranged at the top of described changeable colour pixel region, after described the first electrode layer and described the second electrode lay power up, between produce electric field, described changeable colour pixel region is between described the first electrode layer and described the second electrode lay, under the control of the electric field that can produce at described the first electrode layer and described the second electrode lay, change color.For can with the array base palte of display panel on common electrode effect, produce for controlling the electric field of liquid crystal molecule rotation, the top of the color rete of described color membrane substrates also needs to have a pixel electrode, preferably, above-mentioned the second electrode lay can wholely cover the top of described color rete, as described pixel electrode.

Color membrane substrates in described display is identical with the structure of color membrane substrates in above-described embodiment, at this, describes no longer one by one.

Corresponding to the color membrane substrates in above-described embodiment, the present invention also provides a kind of method for making of color membrane substrates, comprise: on substrate, form color rete, described color rete comprises pixel region and the changeable colour pixel region of at least one color, and described changeable colour pixel region can change color under the control of driving source.

The pixel region of described color can be the pixel region of red pixel district, green pixel district, blue pixel district or other colors.The color rete of most of color membrane substrates comprises: the pixel region of red pixel district, the three kinds of colors in green pixel district and blue pixel district, therefore, in following examples, take described color rete comprises: red pixel district, green pixel district, blue pixel district and changeable colour pixel region describe as example.Described driving source can polytype driving source (for example, electric field, electric current, magnetic field etc.), according to the working mechanism of described changeable colour pixel region, determine, when the working mechanism of described changeable colour pixel region is different, described driving source is different, the structure of described color membrane substrates is not identical yet, and the method for making described color membrane substrates is not identical yet.

When described changeable colour pixel region is made by the electrochromic material that changes color under can the control at electric field, described driving source is electric field, describedly also comprises form color rete on substrate before: on described substrate, form the first electrode layer; Describedly on substrate, form color rete and be specially: on described substrate, form described red pixel district, green pixel district and blue pixel district, above described the first electrode layer, form described changeable colour pixel region; Describedly also comprise form color rete on substrate after: above described color rete, form the second electrode lay.Described changeable colour pixel region is between described the first electrode layer and described the second electrode lay, described the first electrode layer and described the second electrode lay are after powering up, can form electric field between the two, by controlling the variation of electric field intensity, can control described changeable colour pixel region and change color.

Described changeable colour pixel region is not limited to above-mentioned several, can be made by any material that can change color under the effect of driving source.In following embodiment, all with described changeable colour pixel region, by electricity, cause changeable material and be made for example and describe.

In order to improve the display quality of display panel, conventionally also black matrix need to be set on described color membrane substrates, certainly, also black matrix can be set on described color membrane substrates, but by black arranged in matrix on the array base palte of display panel.Below in embodiment, all take and at described color membrane substrates, black matrix is set and describes as example.

As shown in Figure 8, the present invention also provides a kind of method for making of color membrane substrates, comprises the following steps:

Step 801 forms respectively the first electrode layer, black matrix and color rete on substrate, and wherein, described color rete comprises: red pixel district, green pixel district, blue pixel district and changeable colour pixel region;

Step 802 forms the second electrode lay on described black matrix and described color rete.

In above-described embodiment, between described the first electrode layer, described black matrix and described red pixel district, green pixel district, blue pixel district, can form according to any order, described changeable colour pixel region must form after described the first electrode layer.

Described changeable colour pixel region is between described the first electrode layer and described the second electrode, described the first electrode layer and described the second electrode lay are after powering up, can form electric field between the two, by controlling the variation of electric field intensity, can control described changeable colour pixel region and switch between different colours.

In following examples, the electrochromic material that all can switch between Transparent color (W) and yellow (Y) under the control of electric field with described changeable colour pixel region is made for example and describes.

Compare with described red pixel district, green pixel district, blue pixel district, the lower zone of described changeable colour pixel region has described the first electrode layer, therefore it is section poor to cause occurring between the region at place, described changeable colour pixel region and the region at described red pixel district, green pixel district, place, blue pixel district, the poor existence of section can make the cell gap of display panel inhomogeneous, causes occurring mura problem.

Poor in order to eliminate the section existing between described red pixel district, green pixel district, region, blue pixel district and region, described changeable colour pixel region, before above-mentioned steps 802, can also comprise: on described black matrix and described color rete, form the first screed-coat.

Electrochromic material of a great variety, the characteristics such as the color and luster light and shade of different electrochromic materials, light transmission rate are not identical yet.If the yellow chrominance of electrochromic material is higher, use thinner electrochromic material can reach color displays requirement, now, the height sum of described changeable colour pixel region and described the first electrode layer may be lower than the height in described red pixel district, green pixel district, blue pixel district, thereby causes occurring that section is poor between the region at the region at place, described changeable colour pixel region and described red pixel district, green pixel district, place, blue pixel district.

When the height of described changeable colour pixel region is during lower than the height in described red pixel district, green pixel district, blue pixel district, poor in order to eliminate the section existing between described red pixel district, green pixel district, region, blue pixel district and region, described changeable colour pixel region, describedly can also comprise form the first electrode layer on substrate before: on described substrate, form the second screed-coat, and then above described the second screed-coat, form described the first electrode layer.Now, the height of region, described changeable colour pixel region equals the height of described red pixel district, green pixel district, region, blue pixel district.

The yellow chrominance of the electrochromic material using when described changeable colour pixel region is lower, need to use thicker electrochromic material just can reach color displays requirement, now, the height sum of described changeable colour pixel region and described the first electrode layer may be higher than the height in described red pixel district, green pixel district, blue pixel district, thereby causes occurring that section is poor between the region at the region at place, described changeable colour pixel region and described red pixel district, green pixel district, place, blue pixel district.

When the height sum of described changeable colour pixel region and described the first electrode layer is higher than described red pixel district, green pixel district, during the height in blue pixel district, in order to eliminate described red pixel district, green pixel district, the section existing between region, blue pixel district and region, described changeable colour pixel region is poor, describedly before forming the second electrode lay above described color rete, can also comprise: in described red pixel district, green pixel district, blue pixel district, the top of described black matrix forms the 3rd screed-coat, and then form described the second electrode lay above described the 3rd screed-coat and described changeable colour pixel region.Now, the height of region, described changeable colour pixel region equals the height of described red pixel district, green pixel district, region, blue pixel district.

In above-described embodiment, can adopt photoetching process or typography to make color membrane substrates.The employing photoetching process of take is below example, and the method for making of color membrane substrates is elaborated.

The color membrane substrates of take in employing photoetching process construction drawing 2 is example, and the method for making of described color membrane substrates can comprise the following steps:

(1) use sputter (sputter) equipment, by sputter, photoetching process, on the relevant position of substrate 201, do ITO electrode, form the first electrode layer 202;

(2) by spin coating, photoetching process, on the relevant position of described substrate 201, form black matrix 203;

(3) successively red resin, green resin, blue resins and electrochromic material are made on the relevant position of described substrate 201 according to spin coating, exposure, development, etching, the process peeled off, form red pixel district 204, green pixel district 205, blue pixel district 206 and changeable colour pixel region 207, wherein, changeable colour pixel region 207 is made in the top of described the first electrode layer 202, and described red pixel district 204, green pixel district 205, blue pixel district 206 and changeable colour pixel region 207 form the color rete of color membrane substrates;

(4) use sputter equipment to do ITO electrode above color rete and black matrix 203, form the second electrode lay 208, as the pixel electrode use of color membrane substrates.

The color membrane substrates of take in employing photoetching process construction drawing 5 is example, and the method for making of described color membrane substrates can comprise the following steps:

(1) use sputter equipment, by sputter, photoetching process, on the relevant position of substrate 201, do ITO electrode, form the first electrode layer 202;

(2) by spin coating, photoetching process, on the relevant position of described substrate 201, form black matrix 203;

(3) successively red resin, green resin, blue resins and electrochromic material are made on the relevant position of described substrate 201 according to spin coating, exposure, development, etching, the process peeled off, form red pixel district 204, green pixel district 205, blue pixel district 206 and changeable colour pixel region 207, wherein, changeable colour pixel region is made in the top of described the first electrode layer 202, and described red pixel district 204, green pixel district 205, blue pixel district 206 and changeable colour pixel region 207 form the color rete of color membrane substrates;

(4) transparent resin material is made in to described color rete and described black matrix 203 tops according to spin coating, exposure, development, etching, the process peeled off, form OC layer (fat layer is counted in padded levelling), the first screed-coat 209, poor with the section of eliminating between the region at described red pixel district, green pixel district, place, blue pixel district and the region at 207 places, changeable colour pixel region;

(5) use sputter equipment above OC layer, doing ITO electrode, form the second electrode lay 208, as the pixel electrode use of color membrane substrates.

The color membrane substrates of take in employing photoetching process construction drawing 6 is example, and the method for making of described color membrane substrates can comprise the following steps:

(1) water white transparency color blocking material is made in by spin coating, photoetching process on the relevant position of substrate 201, forms the second screed-coat 210;

(2) use sputter equipment, by sputter, photoetching process, above described the second screed-coat 210, do ITO electrode, form the first electrode layer 202;

(3) by spin coating, photoetching process, on the relevant position of described substrate 201, form black matrix 203;

(4) successively red resin, green resin, blue resins and electrochromic material are made on the relevant position of described substrate 201 according to spin coating, exposure, development, etching, the process peeled off, form red pixel district 204, green pixel district 205, blue pixel district 206 and changeable colour pixel region 207, wherein, changeable colour pixel region is made in the top of described the first electrode layer 202, and described red pixel district 204, green pixel district 205, blue pixel district 206 and changeable colour pixel region 207 form the color rete of color membrane substrates;

(5) use sputter equipment above OC layer, doing ITO electrode, form the second electrode lay 208, as the pixel electrode use of color membrane substrates.

The color membrane substrates of take in employing photoetching process construction drawing 7 is example, and the method for making of described color membrane substrates can comprise the following steps:

(1) use sputter equipment, by sputter, photoetching process, on the relevant position of substrate 201, do ITO electrode, form the first electrode layer 202;

(2) by spin coating, photoetching process, on the relevant position of described substrate 201, form black matrix 203;

(3) successively red resin, green resin, blue resins and electrochromic material are made on the relevant position of described substrate 201 according to spin coating, exposure, development, etching, the process peeled off, form red pixel district 204, green pixel district 205, blue pixel district 206 and changeable colour pixel region 207, wherein, changeable colour pixel region is made in the top of described the first electrode layer 202, and described red pixel district 204, green pixel district 205, blue pixel district 206 and changeable colour pixel region 207 form the color rete of color membrane substrates;

(4) water white transparency color blocking material is made in to described color rete and described black matrix 203 tops by spin coating, photoetching process, forms the 3rd screed-coat 211;

(5) use sputter equipment above OC layer, doing ITO electrode, form the second electrode lay 208, as the pixel electrode use of color membrane substrates.

It should be noted that according to actual process condition, photoetching process mode can be changed into typography mode, significantly to reduce costs.

The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims (13)

1. a color membrane substrates, is characterized in that, comprising:
Substrate; And
Be formed on the color rete on described substrate, described color rete comprises: the pixel region of at least one color and changeable colour pixel region, described changeable colour pixel region can change color under the control of driving source, described driving source is electric field, and described changeable colour pixel region is made by the electrochromic material that can switch between Transparent color and yellow under the control of electric field.
2. color membrane substrates as claimed in claim 1, is characterized in that, described driving source is electric field, and described color membrane substrates also comprises:
The first electrode layer, is arranged at the below of described changeable colour pixel region;
The second electrode lay, is arranged at the top of described color rete;
Wherein, after described the first electrode layer and described the second electrode lay power up, between produce electric field.
3. color membrane substrates as claimed in claim 2, is characterized in that, also comprises:
The first screed-coat, poor for eliminating the section existing between the region, pixel region of described color and region, described changeable colour pixel region, be arranged between described color rete and described the second electrode lay.
4. color membrane substrates as claimed in claim 2, is characterized in that, the height sum of described changeable colour pixel region and described the first electrode layer is lower than the height of the pixel region of described color, and described color membrane substrates also comprises:
The second screed-coat, poor for eliminating the section existing between the region, pixel region of described color and region, described changeable colour pixel region, be arranged between described substrate and described the first electrode layer.
5. color membrane substrates as claimed in claim 2, is characterized in that, the height sum of described changeable colour pixel region and described the first electrode layer is higher than the height of the pixel region of described color, and described color membrane substrates also comprises:
The 3rd screed-coat, poor for eliminating the section existing between the region, pixel region of described color and region, described changeable colour pixel region, be arranged between the pixel region and described the second electrode lay of described color.
6. color membrane substrates as claimed in claim 1, is characterized in that, the pixel region of described at least one color comprise in red pixel district, green pixel district or blue pixel district one of at least.
7. a display panel, comprises array base palte, color membrane substrates and is filled in the liquid crystal material between described display substrate and described color membrane substrates, and it is characterized in that, described color membrane substrates is the color membrane substrates described in claim 1 to 6 any one.
8. a display, comprises display panel and is coupled to the driving circuit of described display panel, it is characterized in that, described display panel is display panel claimed in claim 7.
9. a method for making for color membrane substrates, is characterized in that, comprising:
On substrate, form color rete, described color rete comprises: the pixel region of at least one color and changeable colour pixel region, described changeable colour pixel region can change color under the control of driving source, described driving source is electric field, and described changeable colour pixel region is made by the electrochromic material that can switch between Transparent color and yellow under the control of electric field.
10. the method for making of color membrane substrates as claimed in claim 9, is characterized in that, described driving source is electric field;
Describedly also comprise form color rete on substrate before: on described substrate, form the first electrode layer;
Describedly on substrate, form color rete and be specially: on described substrate, form the pixel region of described color, above described the first electrode layer, form described changeable colour pixel region;
Describedly also comprise form color rete on substrate after: above described color rete, form the second electrode lay, wherein, after described the first electrode layer and described the second electrode lay power up, between produce electric field.
The method for making of 11. color membrane substrates as claimed in claim 10, is characterized in that, describedly before forming the second electrode lay above described color rete, also comprises:
Above described color rete, be formed for eliminating the first poor screed-coat of section existing between the region, pixel region of described color and region, described changeable colour pixel region.
The method for making of 12. color membrane substrates as claimed in claim 10, is characterized in that, the height sum of described changeable colour pixel region and described the first electrode layer is lower than the height of the pixel region of described color;
Describedly also comprise form the first electrode layer on described substrate before: on described substrate, be formed for eliminating the second poor screed-coat of section existing between the region, pixel region of described color and region, described changeable colour pixel region;
Described first electrode layer that forms on described substrate is specially: on described the second screed-coat, form described the first electrode layer.
The method for making of 13. color membrane substrates as claimed in claim 10, is characterized in that, the height sum of described changeable colour pixel region and described the first electrode layer is higher than the height of the pixel region of described color;
Describedly before forming the second electrode lay above described color rete, also comprise: above the pixel region of described color, be formed for eliminating the 3rd poor screed-coat of section existing between the region, pixel region of described color and region, described changeable colour pixel region;
Describedly be specially forming the second electrode lay above described color rete: above described the 3rd screed-coat and described changeable colour pixel region, form described the second electrode lay.
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