CN111399267A - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN111399267A CN111399267A CN202010411370.XA CN202010411370A CN111399267A CN 111399267 A CN111399267 A CN 111399267A CN 202010411370 A CN202010411370 A CN 202010411370A CN 111399267 A CN111399267 A CN 111399267A
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1339—Gaskets; Spacers; Sealing of cells
Abstract
The invention discloses a display panel and a display device. The display panel includes: a first display area and a second display area; the display panel also comprises an array substrate, a color film substrate and a liquid crystal layer arranged between the array substrate and the color film substrate; the first display area comprises a plurality of first pixels, and each first pixel comprises a first transparent electrode and a second transparent electrode which are positioned on one side of the array substrate, and a third transparent electrode and a fourth transparent electrode which are positioned on one side of the color film substrate; the first transparent electrode comprises a plurality of first strip electrodes, and the second transparent electrode is a block electrode; the third transparent electrode comprises a plurality of second strip-shaped electrodes, and the fourth transparent electrode is a block-shaped electrode; the liquid crystal layer is used for deflecting under the action of the electric fields of the first transparent electrode and the second transparent electrode respectively and deflecting under the action of the electric fields of the third transparent electrode and the fourth transparent electrode, so that the deflection degree of liquid crystal in the first display area can be enhanced, and the light transmittance of the first display area is improved.
Description
Technical Field
The invention relates to the technical field of novel display, in particular to a display panel and a display device.
Background
The full screen is a broader definition of ultra-high screen than the design of the mobile phone in the mobile phone industry. The explanation is that the front of the mobile phone is a screen, and the four frame positions of the mobile phone are designed without frames, so that the screen occupation ratio is close to 100%. With the development of communication technology and social media, the demand of a mobile phone screen on high screen occupation ratio is increasing day by day, and the penetration rate of the existing market on a full screen is close to 70%.
In the prior art, a camera needs to be directly placed below a liquid crystal display screen to realize comprehensive screen display, and a display area corresponding to the camera is used for displaying pictures in a display mode; under the mode of making a video recording, the display area that the camera corresponds can see through external environment light to make the camera acquire external environment light and form an image, other display areas are used for showing the picture of shooing. However, the liquid crystal layer may block a portion of the external ambient light, so that the light intensity of the external ambient light received by the camera is relatively low, resulting in poor imaging quality of the camera.
Disclosure of Invention
The invention provides a display panel and a display device, which are used for improving the light transmittance of a first display area so as to improve the imaging quality of an optical element.
In a first aspect, an embodiment of the present invention provides a display panel, including: a first display area and a second display area;
the display panel also comprises an array substrate, a color film substrate and a liquid crystal layer arranged between the array substrate and the color film substrate;
the first display area comprises a plurality of first pixels, and each first pixel comprises a first transparent electrode and a second transparent electrode which are positioned on one side of the array substrate, and a third transparent electrode and a fourth transparent electrode which are positioned on one side of the color film substrate; the first transparent electrode comprises a plurality of first strip electrodes, and the second transparent electrode is a block electrode; the third transparent electrode comprises a plurality of second strip-shaped electrodes, and the fourth transparent electrode is a block-shaped electrode;
the liquid crystal layer is used for deflecting under the action of the electric fields of the first transparent electrode and the second transparent electrode respectively and deflecting under the action of the electric fields of the third transparent electrode and the fourth transparent electrode.
In a second aspect, an embodiment of the present invention provides a display device, including the display panel provided in the first aspect.
According to the technical scheme provided by the embodiment of the invention, the first transparent electrode and the second transparent electrode of the fringe field switching technology type are arranged on one side of the array substrate of the first display area, the third transparent electrode and the fourth transparent electrode of the fringe field switching technology type are arranged on one side of the color film substrate of the first display area, the liquid crystal layer deflects under the action of the electric fields of the first transparent electrode and the second transparent electrode respectively, and deflects under the action of the electric fields of the third transparent electrode and the fourth transparent electrode, so that the deflection control capability of liquid crystal in the first display area can be enhanced, the deflection degree of the liquid crystal in the first display area is improved, and further the light transmittance of the first display area is improved; when the first display area is reused as the optical sensor setting area, the optical sensor (such as the camera shooting unit and the fingerprint identification unit) positioned in the first display area can receive more light rays based on higher light transmittance, so that the photosensitive effect of the optical sensor is improved, and the use precision of the optical sensor is improved.
Drawings
In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, a brief description is given below of the drawings used in describing the embodiments. It should be clear that the described figures are only views of some of the embodiments of the invention to be described, not all, and that for a person skilled in the art, other figures can be derived from these figures without inventive effort.
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of the display panel shown in FIG. 1 along a section line AA';
FIG. 3 is a schematic diagram of transmittance of different display panels according to an embodiment of the invention;
fig. 4 is a schematic partial structure diagram of a display panel according to an embodiment of the present invention;
FIG. 5 is a schematic cross-sectional view of the display panel shown in FIG. 4 along a section line BB';
FIG. 6 is a schematic diagram illustrating transmittance of a display panel according to another embodiment of the present invention;
FIG. 7 is a schematic diagram illustrating transmittance of a display panel according to another embodiment of the present invention;
fig. 8 is a schematic partial structure diagram of another display panel according to an embodiment of the present invention;
FIG. 9 is a cross-sectional view of the display panel shown in FIG. 8 along the cross-sectional line CC';
FIG. 10 is a schematic diagram illustrating transmittance of a display panel according to another embodiment of the present invention;
FIG. 11 is a schematic view of another display panel structure according to an embodiment of the present invention;
FIG. 12 is a schematic view of a partial structure of the display panel shown in FIG. 11;
FIG. 13 is a schematic view of another display panel structure according to an embodiment of the present invention;
fig. 14 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. It should be further noted that, for the convenience of description, only some of the structures related to the present application are shown in the drawings, not all of the structures.
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention, and fig. 2 is a schematic structural diagram of a cross section of the display panel shown in fig. 1 along a section line AA', and with reference to fig. 1 and fig. 2, a display panel 100 includes a first display area 101 and a second display area 102.
The display panel 100 further includes an array substrate 110, a color filter substrate 120, and a liquid crystal layer 130 disposed between the array substrate 110 and the color filter substrate 120.
The first display area 101 includes a plurality of first pixels 140, and each of the first pixels 140 includes a first transparent electrode 150 and a second transparent electrode 160 located on one side of the array substrate 110, and a third transparent electrode 170 and a fourth transparent electrode 180 located on one side of the color film substrate 120; the first transparent electrode 150 includes a plurality of first stripe electrodes 151, and the second transparent electrode 160 is a block electrode; the third transparent electrode 170 includes a plurality of second stripe electrodes 171, and the fourth transparent 180 electrode is a block electrode.
The liquid crystal layer 130 is for being deflected by an electric field of the first and second transparent electrodes 150 and 160, and by an electric field of the third and fourth transparent electrodes 170 and 180, respectively.
For example, as shown in fig. 2, in the embodiment of the present invention, the first pixel 140 in the first display region 101 includes a first transparent electrode 150 and a second transparent electrode 160 located on one side of the array substrate 110, and a third transparent electrode 170 and a fourth transparent electrode 180 located on one side of the color filter substrate 120; the first transparent electrode 150 includes a plurality of first stripe electrodes 151, the second transparent electrode 160 is a block electrode, and the first transparent electrode 150 and the second transparent electrode 160 form a Fringe Field Switching (FFS) type pixel electrode and a common electrode, thereby ensuring good penetration of the display panel; similarly, the third transparent electrode 170 includes a plurality of second strip electrodes 171, the fourth transparent electrode 180 is a block electrode, and the third transparent electrode 170 and the fourth transparent electrode 180 form an FFS type pixel electrode and a common electrode, thereby ensuring that the display panel has good penetrability.
Further, the liquid crystal layer 130 is configured to deflect under the action of the electric fields of the first transparent electrode 150 and the second transparent electrode 160, and deflect under the action of the electric fields of the third transparent electrode 170 and the fourth transparent electrode 180, so that the first transparent electrode 150 and the second transparent electrode 160 on one side of the array substrate 110, and the third transparent electrode 170 and the fourth transparent electrode 180 on one side of the color film substrate 120 drive the liquid crystal to deflect together, which can enhance the deflection control capability of the liquid crystal in the first display area 101, improve the deflection degree of the liquid crystal in the first display area 101, and further improve the transmittance of the first display area 101. When the first display area 101 is multiplexed as the optical sensor setting area, the optical sensor (e.g., the camera unit and the fingerprint recognition unit) located in the first display area can receive more light rays based on higher light transmittance, so that the photosensitive effect of the optical sensor is improved, and the use accuracy of the optical sensor is improved.
Specifically, fig. 3 is a schematic diagram of transmittance of different display panels according to an embodiment of the present invention. Simulating the transmittance of the first display areas of different display panels by using simulation software to obtain a graph of the transmittance of the first display areas of different display panels, where as shown in fig. 3, curve 1 (a solid line in the figure) is a transmittance curve of the first display area where the pixel electrode and the common electrode are arranged only on one side of the array substrate, and curve 2 (a dotted line in the figure) is a transmittance curve of the first display area of the display panel (shown in fig. 2) provided in the embodiment of the present invention, as shown in fig. 3, when the pixel electrode and the common electrode are arranged only on one side of the array substrate, the transmittance of the first display area of the display panel is about 6.7%, and when the technical solution provided in the embodiment of the present invention is adopted, the pixel electrode and the common electrode are respectively arranged on both sides of the liquid crystal layer, and further the FFS type pixel electrode and the common electrode are arranged, the transmittance of the first display area of the display panel is about 7%, this can further increase the light transmittance of the first display region by about 4.5%, which is a great improvement for display panels requiring high transmittance. When the first display area is reused as the optical sensor setting area, the optical sensor (such as a camera shooting unit and a fingerprint identification unit) positioned in the first display area can receive more light rays based on higher light transmittance, so that the photosensitive effect of the optical sensor is greatly improved, and the use precision of the optical sensor is favorably improved.
In summary, according to the display panel provided in the embodiment of the present invention, the FFS type pixel electrode and the common electrode are disposed on one side of the array substrate by the first pixel of the first display region, and the FFS type pixel electrode and the common electrode are disposed on one side of the color film substrate, so that the deflection control capability of the liquid crystal in the first display region is enhanced, the deflection degree of the liquid crystal in the first display region is improved, and the transmittance of the first display region is further improved. When the first display area is reused as the optical sensor setting area, the optical sensor (such as the camera shooting unit and the fingerprint identification unit) positioned in the first display area can receive more light rays based on higher light transmittance, the photosensitive effect of the optical sensor is improved, and the use precision of the optical sensor is improved.
Optionally, fig. 4 is a schematic partial structure diagram of a display panel according to an embodiment of the present invention. For convenience of exemplarily explaining the positional relationship between the first and second stripe electrodes 151 and 171, only the first and second stripe electrodes 151 and 171 are exemplarily illustrated in fig. 4, and the other portions are omitted. As shown in fig. 4, a spacing region 152 is disposed between two adjacent first stripe-shaped electrodes 151, and a perpendicular projection of the second stripe-shaped electrode 171 on a plane where the first stripe-shaped electrodes 151 are located at least partially overlaps the spacing region 152.
Specifically, fig. 5 is a schematic cross-sectional structure of the display panel shown in fig. 4 along a section line BB', and in combination with fig. 4 and fig. 5, adjacent first stripe electrodes 151 are separated by a spacing region 152, and a perpendicular projection of the second stripe electrodes 171 on a plane where the first stripe electrodes 151 are located overlaps with a part of the spacing region 152. Since the electric field formed between the first stripe electrodes 151 and the second transparent electrodes 160 has a strong ability to control the deflection of the liquid crystal directly above the first stripe electrodes 151 and a weak ability to control the deflection of the liquid crystal directly above the spacing regions 152, it may cause a problem that the light transmittance in the first display region is not uniform. Through setting up the vertical projection of second bar electrode 171 on the plane of first bar electrode 151 with some interval region 152 at least part overlap, so, the electric field through the formation between second bar electrode 171 and the fourth transparent electrode 180 strengthens the deflection control ability to the liquid crystal that is located directly over interval region 152, guarantee that whole first display area different positions all possess stronger deflection control ability to the liquid crystal, when guaranteeing to improve the transmissivity of first display area, promote the equilibrium of first display area transmissivity, the light transmission effect of first display area is promoted in the first step.
Specifically, fig. 6 is a schematic diagram of transmittance of another display panel according to an embodiment of the present invention, and fig. 7 is a schematic diagram of transmittance of another display panel according to an embodiment of the present invention, where the transmittance of the first display area of different display panels is simulated by simulation software to obtain a graph of the transmittance of the first display area of different display panels. Fig. 6 is a transmittance of a first display region of the display panel where pixel electrodes and common electrodes are disposed only on one side of the array substrate; fig. 7 shows the transmittance of the first display region of the corresponding display panel when FFS type pixel electrodes and common electrodes are respectively disposed on two layers of the liquid crystal layer, and the second stripe electrodes are disposed such that the vertical projection of the second stripe electrodes on the plane of the first stripe electrodes partially overlaps the spacing regions. As shown in fig. 6 and 7, the light transmittance fluctuation range of the graph shown in fig. 7 is relatively small. Therefore, when the vertical projection of the second strip-shaped electrode on the plane where the first strip-shaped electrode is located is at least partially overlapped with the spacing area, the uniformity of the transmittance of the first display area can be improved, the uniformity of the transmittance of the first display area is improved while the transmittance of the first display area is improved, and the light transmittance effect of the first display area is improved.
Further, fig. 8 is a partial structural schematic view of another display panel according to an embodiment of the present invention, and fig. 9 is a sectional structural schematic view of the display panel shown in fig. 8 along a section line CC'. Referring to fig. 8 and 9, a plurality of first stripe electrodes 151 are arranged along a first direction, and a plurality of second stripe electrodes 171 are arranged along the first direction.
In the first direction, the extension width W2 of the second strip electrodes 171 is greater than the extension width S of the spacing regions 152, and the orthogonal projection of the second strip electrodes 171 on the plane of the first strip electrodes 151 covers the spacing regions 152.
Specifically, referring to fig. 8 and 9, the first direction is a direction indicated by an arrow in the drawing, the second strip-shaped electrode 171 has an extension width W2 in the first direction, and the spacing region 152 has an extension width S in the first direction, and S < W2 is satisfied. Because the control capability of the electric field formed between the first transparent electrode 150 and the second transparent electrode 160 on the liquid crystal layer 130 corresponding to the spacing region 152 is weaker, the extending width W2 of the second strip-shaped electrode 171 is set to be larger than the extending width S of the spacing region 152, and the vertical projection of the second strip-shaped electrode 171 on the plane where the first strip-shaped electrode 151 is located covers the spacing region 152, so that it is ensured that the second strip-shaped electrode 171 can perform deflection control on all liquid crystals corresponding to the spacing region 152, and it is ensured that the transmittance of the first display region is further improved, the uniformity of the transmittance of the first display region is further improved, and the light transmission effect of the first display region is further improved.
Specifically, fig. 10 is a schematic diagram of the transmittance of another display panel according to an embodiment of the present invention, and a graph of the transmittance of the first display area of the display panel is obtained by simulating the transmittance of the first display area of the display panel shown in fig. 8 and 9 with simulation software. As shown in fig. 10, when the vertical projection of the second strip-shaped electrode on the plane where the first strip-shaped electrode is located covers the spacing region, the fluctuation range of the curve is smaller, and therefore, when the vertical projection of the second strip-shaped electrode on the plane where the first strip-shaped electrode is located covers the overlapping of the spacing region, the transmittance of the first display area is further improved, and simultaneously, the balance of the transmittance of the first display area is further improved, and the light transmission effect of the first display area is further improved.
Alternatively, with continued reference to fig. 8 and 9, in the first direction, the first stripe-shaped electrode 151 has an extended width W1, the second stripe-shaped electrode 152 has an extended width W2, and the spacing region 152 has an extended width S; wherein W1 is more than or equal to 2.0 and less than or equal to 3.0 mu m, W2 is more than or equal to 2.0 and less than or equal to 3.0 mu m, and S is more than or equal to 2.0 and less than or equal to 3.0 mu m.
Specifically, in the process of the display panel, due to the limitation of conditions such as process equipment and process conditions, the extension width W1 of the first stripe electrodes 151, the extension width W2 of the second stripe electrodes 152, and the extension width S of the spacing regions 152 need to be set appropriately. For example, when the process limit is 2 μm, the extension width W1 of the first stripe electrodes 151 and the extension width W2 of the second stripe electrodes 152 and the extension width S of the spacing regions 152 may be set to be greater than or equal to the process limit value, so as to ensure that the extension width W1 of the first stripe electrodes 151, the extension width W2 of the second stripe electrodes 152 and the extension width S of the spacing regions 152 meet the process requirements. Further, if the extension width W1 of the first stripe electrodes 151, the extension width W2 of the second stripe electrodes 152, and the extension width S of the spacing regions 152 are too large, which adversely affects the transmittance of the liquid crystal layer 130, it is necessary to appropriately set the extension width W1 of the first stripe electrodes 151, and the extension width W2 of the second stripe electrodes 152 and the extension width S of the spacing regions 152 cannot be too large. It has been found in practice that when the extension width W1 of the first stripe electrodes 151, the extension width W2 of the second stripe electrodes 152, and the extension width S of the spacing regions 152 are all greater than 3 μm, the transmittance of the liquid crystal layer 130 starts to decrease, and therefore, the extension width W1 of the first stripe electrodes 151, the extension width W2 of the second stripe electrodes 152, and the extension width S of the spacing regions 152 satisfy the following relationship: w1 is more than or equal to 2.0 and less than or equal to 3.0 mu m, W2 is more than or equal to 2.0 and less than or equal to 3.0 mu m, and S is more than or equal to 2.0 and less than or equal to 3.0 mu m. It should be noted that, in the embodiment of the present invention, only the process limit value and the corresponding parameter value when the transmittance of the liquid crystal layer 130 starts to decrease are exemplarily described, and in practical applications, the process limit value and the corresponding parameter value when the transmittance of the liquid crystal layer starts to decrease are flexibly set according to factors such as process equipment, process conditions, and materials.
On the basis of the above embodiment, with continued reference to fig. 1, the second display region 102 includes a plurality of second pixels 190; the first pixel 140 has a first pixel area M1, the second pixel 190 has a second pixel area M2, and the area M1 of the first pixel 170 is larger than the area M2 of the second pixel 190.
For example, the area M1 of the first pixel 170 is larger than the area M2 of the second pixel 190, for example, the area M1 of the first pixel 170 may be 75 μ M × 225 μ M, which is much larger than the area of the second pixel 190, so that the number of the first pixels 140 is smaller than the number of the second pixels 190 per unit area, that is, the pixel density of the first display region 101 is smaller than the pixel density of the second display region 102, thereby increasing the light transmittance of the first display region 101, and when the first display region is reused as the optical sensor arrangement region, the optical sensor (e.g., the image capturing unit and the fingerprint identification unit) in the first display region may receive more light based on higher light transmittance, thereby improving the light sensing effect of the optical sensor, and facilitating to improve the use accuracy of the optical sensor.
On the basis of the above embodiment, how the third transparent electrode 170 and the fourth transparent electrode 180 on the color film substrate 120 side in the first display region specifically operate will be described next in detail.
Optionally, fig. 11 is a schematic structural diagram of another display panel according to an embodiment of the present invention, and fig. 12 is a schematic partial structural diagram of the display panel shown in fig. 11. Referring to fig. 11 and 12, the plurality of second stripe electrodes 171 in the same first pixel 140 are electrically connected, and the second stripe electrodes 171 in different first pixels 140 are electrically connected by a connection wire.
The array substrate 110 further includes a signal transmission terminal 210, and a fixed potential signal is input to the signal transmission terminal 210.
The display panel 100 further includes a conductive sealant 220 located between the array substrate 110 and the color film substrate 120, wherein the conductive sealant 220 is electrically connected to the signal transmission terminal 210 and the second strip electrode 171 respectively, and is used for transmitting a fixed potential signal to the second strip electrode 171.
Specifically, as shown in fig. 11 and 12, the same first pixel 140 includes electrically connected second strip electrodes 171, and the second strip electrodes 171 in different first pixels 140 are electrically connected through the connection wires, that is, all the second strip electrodes 171 in the third transparent electrode 170 are electrically connected. The input end of the signal transmission terminal 210 in the array substrate 110 is electrically connected to the output end of the driving chip (not shown in the figure), the output end of the signal transmission terminal 210 is electrically connected to the conductive sealant 220, the driving signal provided by the driving chip is transmitted to the conductive sealant 220 through the signal transmission terminal 210, the conductive sealant 220 transmits the driving signal to the second strip electrode 171, so that the driving signal is applied to the third transparent electrode 170, and an electric field is formed between the third transparent electrode 170 and the fourth transparent electrode 180. When first display area is used for optical sensor setting area repeatedly, guarantee that the liquid crystal layer can deflect under the electric field effect of first transparent electrode and second transparent electrode respectively, deflect under the electric field effect of third transparent electrode and fourth transparent electrode, and then improve the light transmissivity in first display area, guarantee that the optical sensor (for example the unit of making a video recording, fingerprint identification unit) that is located first display area can receive more light based on higher light transmissivity, optical sensor's sensitization effect has been improved, be favorable to improving optical sensor's use accuracy.
Optionally, with continued reference to fig. 11, the array substrate 110 further includes a driving circuit 230, where the driving circuit 230 is electrically connected to the first transparent electrode 150 and is configured to transmit a driving signal to the first transparent electrode 150.
The driving circuit 230 includes a thin film transistor 2301, and the thin film transistor 2301 includes a source electrode 231, a gate electrode 232, and a drain electrode 233; the signal transmission terminal 210 is disposed at the same layer as the source 231 and the drain 233.
Specifically, as shown in fig. 11, the gate electrode 232 is electrically connected to a driving chip (not shown), the driving chip provides a gate driving signal to the gate electrode 232, the thin film transistor 2301 is turned on, the drain electrode 233 outputs a driving signal, the drain electrode 233 is electrically connected to the first transparent electrode 150, the driving signal is applied to the first transparent electrode 150, and an electric field is formed between the first transparent electrode 150 and the second transparent electrode 160. In the embodiment of the invention, the signal transmission terminal 210, the source electrode 231 and the drain electrode 233 are arranged at the same layer, and a mask plate does not need to be separately manufactured for the signal transmission terminal 210, so that the cost is saved, the manufacturing procedure is reduced, and the production efficiency is improved. In other embodiments, the signal transmission terminal 210 and the gate 232 may be disposed on the same layer, and a mask plate does not need to be separately manufactured for the signal transmission terminal 210, so that the cost is saved, the process steps are reduced, and the production efficiency is improved.
Optionally, with continued reference to fig. 11, the display panel 100 further includes a sealant 221 located between the array substrate 110 and the color film substrate 120; the conductive sealant 220 includes a sealant 221 and conductive particles 222 disposed in the sealant 221.
Specifically, the first display region is usually disposed at a position close to a frame of the display panel 100, the frame of the display panel 100 is configured such that the encapsulation sealant 221 bonds the array substrate 110 and the color filter substrate 120 to form a closed space for accommodating the liquid crystal layer 130, and therefore, the conductive particles 222 are added to the encapsulation sealant 221, and the array substrate 110 and the color filter substrate 120 of the first display region can be conducted, so as to transmit the driving signal from the array substrate 110 to the color filter substrate 120, thereby ensuring that the third transparent electrode 170 can normally receive the driving signal and the receiving manner of the driving signal is simple.
Optionally, with continued reference to fig. 11, during the display phase, zero potential voltage is input to the third transparent electrode 170 and the fourth transparent electrode 180; the liquid crystal layer 130 has negative liquid crystal disposed therein.
Specifically, when zero potential voltage is input to the third transparent electrode 170 and the fourth transparent electrode 180 in the first display area, an electric field is not formed between the third transparent electrode 170 and the fourth transparent electrode 180, and no influence is exerted on the deflection of liquid crystal in the liquid crystal layer 130, and the first transparent electrode 150 and the second transparent electrode 160 can display images in the first display area under the action of the display driving signal; when the image is displayed, the transparent electrode on one side of the array substrate 110 and the transparent electrode on one side of the color film substrate 120 generate a vertical electric field, and the negative liquid crystal cannot tilt under the action of the vertical electric field, so that the light transmittance of the first display area when the image is displayed is not affected.
Optionally, fig. 13 is a schematic structural diagram of another display panel according to an embodiment of the present invention. As shown in fig. 13, the color filter substrate 120 further includes a planarization layer 240, a color filter layer 250 and a black matrix layer 260 on a side of the fourth transparent electrode 180 away from the liquid crystal layer 130.
Specifically, as shown in fig. 13, the planarization layer 240 is disposed on the side of the fourth transparent electrode 180 away from the liquid crystal layer 130; the color film layer 250 is disposed on a side of the planarization layer 240 away from the liquid crystal layer 130; the black matrix layer 260 is disposed on a side of the color film layer 250 away from the liquid crystal layer 130.
Based on the same inventive concept, the embodiment of the invention further provides a display device, which comprises any one of the display panels provided in the embodiments of the application.
Fig. 14 is a schematic structural diagram of a display device according to an embodiment of the present invention. As shown in fig. 14, the display device 200 includes any one of the display panels 100 in the above embodiments.
The display device 200 provided in the embodiment of the invention has the advantages of the display panel 100 in the above embodiments, and details are not repeated herein. In a specific implementation, the display device 200 may be a mobile phone, a tablet computer, a notebook computer, or any product or component with a display function, such as a television, a display area, a digital photo frame, a navigator, an intelligent wearable display device, and the like, which is not limited in this embodiment of the present invention.
The foregoing is considered as illustrative of the preferred embodiments of the invention and technical principles employed. The present invention is not limited to the specific embodiments herein, and it will be apparent to those skilled in the art that various changes, rearrangements, and substitutions can be made without departing from the scope of the invention. Therefore, although the present invention has been described in more detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the claims.
Claims (11)
1. A display panel includes a first display region and a second display region;
the display panel also comprises an array substrate, a color film substrate and a liquid crystal layer arranged between the array substrate and the color film substrate;
the first display area comprises a plurality of first pixels, and each first pixel comprises a first transparent electrode and a second transparent electrode which are positioned on one side of the array substrate, and a third transparent electrode and a fourth transparent electrode which are positioned on one side of the color film substrate; the first transparent electrode comprises a plurality of first strip electrodes, and the second transparent electrode is a block electrode; the third transparent electrode comprises a plurality of second strip-shaped electrodes, and the fourth transparent electrode is a block-shaped electrode;
the liquid crystal layer is used for deflecting under the action of the electric fields of the first transparent electrode and the second transparent electrode respectively and deflecting under the action of the electric fields of the third transparent electrode and the fourth transparent electrode.
2. The display panel according to claim 1, wherein a spacing region is disposed between two adjacent first strip-shaped electrodes, and a perpendicular projection of the second strip-shaped electrodes on a plane where the first strip-shaped electrodes are located at least partially overlaps the spacing region.
3. The display panel according to claim 2, wherein the plurality of first stripe electrodes are arranged in a first direction, and the plurality of second stripe electrodes are arranged in the first direction;
along the first direction, the extension width of the second strip-shaped electrodes is larger than that of the spacing areas, and the perpendicular projection of the second strip-shaped electrodes on the plane where the first strip-shaped electrodes are located covers the spacing areas.
4. The display panel according to claim 3, wherein, in the first direction, the first stripe electrodes have an extended width W1, the second stripe electrodes have an extended width W2, and the spacing regions have an extended width S;
wherein W1 is more than or equal to 2.0 and less than or equal to 3.0 mu m, W2 is more than or equal to 2.0 and less than or equal to 3.0 mu m, and S is more than or equal to 2.0 and less than or equal to 3.0 mu m.
5. The display panel according to any one of claims 1 to 4, wherein the second display region includes a plurality of second pixels;
the first pixel has a first pixel area and the second pixel has a second pixel area, the first pixel area being greater than the second pixel area.
6. The display panel according to claim 1, wherein the plurality of second stripe electrodes in the same first pixel are electrically connected, and the second stripe electrodes in different first pixels are electrically connected by a connection lead;
the array substrate further comprises a signal transmission terminal, and a fixed potential signal is input to the signal transmission terminal;
the display panel further comprises a conductive frame glue positioned between the array substrate and the color film substrate, wherein the conductive frame glue is electrically connected with the signal transmission terminal and the second strip-shaped electrode respectively and is used for transmitting the fixed potential signal to the second strip-shaped electrode.
7. The display panel according to claim 6, wherein the array substrate further comprises a driving circuit electrically connected to the first transparent electrode for transmitting a driving signal to the first transparent electrode;
the driving circuit comprises a thin film transistor, wherein the thin film transistor comprises a source electrode, a grid electrode and a drain electrode;
the signal transmission terminal and the gate are arranged on the same layer, or the signal transmission terminal and the source and the drain are arranged on the same layer.
8. The display panel according to claim 6, further comprising an encapsulating sealant between the array substrate and the color film substrate;
the conductive frame glue comprises the packaging frame glue and conductive particles positioned in the packaging frame glue.
9. The display panel according to claim 6, wherein a zero potential voltage is input to the third transparent electrode and the fourth transparent electrode in a display phase;
and negative liquid crystal is arranged in the liquid crystal layer.
10. The display panel according to claim 1, wherein the color film substrate further comprises a planarization layer, a color film layer and a black matrix layer on a side of the fourth transparent electrode away from the liquid crystal layer.
11. A display device characterized by comprising the display panel according to any one of claims 1 to 10.
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| CN113671760A (en) * | 2021-08-19 | 2021-11-19 | 京东方科技集团股份有限公司 | Display panel and display device |
| CN114333563A (en) * | 2020-09-29 | 2022-04-12 | 群创光电股份有限公司 | Display device |
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| CN111399267B (en) | 2023-03-14 |
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