CN111384095A

CN111384095A - Terminal

Info

Publication number: CN111384095A
Application number: CN201811647762.5A
Authority: CN
Inventors: 高静
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2018-12-29
Filing date: 2018-12-29
Publication date: 2020-07-07
Anticipated expiration: 2038-12-29
Also published as: CN111384095B

Abstract

The present disclosure relates to a terminal, including: the display panel comprises a first display area and a second display area, wherein the transmittance of the first display area is greater than that of the second display area, and the image acquisition equipment is arranged on one side of the first display area; the organic light emitting diode in the first display region includes a transparent cathode, an electron injection layer; the ratio of the aperture ratios of the blue sub-pixels to the other color sub-pixels in the first display area is larger than the ratio of the aperture ratios of the blue sub-pixels to the other color sub-pixels in the second display area. According to the embodiment of the disclosure, light can be ensured to smoothly enter the image acquisition device through the first display area, so that the image acquisition device acquires clear images, and color cast of the first display area can be avoided.

Description

Terminal

Technical Field

The present disclosure relates to the field of display technologies, and in particular, to a terminal.

Background

With the improvement of the requirement of the user on the display effect of the mobile phone, mobile phone manufacturers continuously improve the area proportion of the screen on the front side of the mobile phone to meet the requirements of the user.

However, due to the existence of the front camera, in order to arrange the front camera on the front face of the mobile phone, the area ratio of the screen on the front face of the mobile phone is inevitably influenced.

Disclosure of Invention

The present disclosure provides a terminal to solve the disadvantages of the related art.

According to a first aspect of the embodiments of the present disclosure, there is provided a terminal, including:

the display panel comprises an organic light emitting diode display panel and image acquisition equipment, wherein the organic light emitting diode display panel comprises a first display area and a second display area, the transmittance of the first display area is greater than that of the second display area, and the image acquisition equipment is arranged on one side of the first display area;

the organic light emitting diode in the first display region comprises a transparent cathode, an electron injection layer, an electron transport layer, an organic material layer, a hole transport layer, a hole injection layer and an anode;

the aperture ratio of the blue sub-pixel in the first display area is greater than that of the blue sub-pixel in the second display area, and the ratio of the aperture ratio of the blue sub-pixel in the first display area to that of the other color sub-pixels is greater than that of the blue sub-pixel in the second display area to that of the other color sub-pixels.

Optionally, the organic light emitting diode display panel further includes:

a transition region disposed between the first display region and the second display region, wherein the organic light emitting diode in the transition region comprises a transparent cathode, an electron injection layer, a composite alloy layer, an electron transport layer, an organic material layer, a hole transport layer, a hole injection layer, and an anode;

the aperture ratio of the blue sub-pixel in the transition region is smaller than the aperture ratio of the blue sub-pixel in the first display region and larger than the aperture ratio of the blue sub-pixel in the second display region; the ratio of the aperture ratios of the blue sub-pixels to the other color sub-pixels in the transition region is smaller than the ratio of the aperture ratios of the blue sub-pixels to the other color sub-pixels in the first display region and larger than the ratio of the aperture ratios of the blue sub-pixels to the other color sub-pixels in the second display region.

Optionally, the transition region includes a first transition sub-region and a second transition sub-region, the first transition sub-region is disposed on a side of the transition region close to the first display region, and the second transition region is disposed on a side of the transition region close to the second display region;

the thicknesses of the transparent cathode and the electron injection layer in the first transition sub-region are greater than that of the composite alloy layer, and the thickness of the composite alloy layer in the second transition sub-region is greater than that of the transparent cathode and the electron injection layer;

the aperture ratio of the blue sub-pixel in the first transition sub-region is greater than that of the blue sub-pixel in the second transition sub-region; the ratio of the aperture ratios of the blue sub-pixels to the other color sub-pixels in the first transition sub-region is larger than the ratio of the aperture ratios of the blue sub-pixels to the other color sub-pixels in the second transition sub-region.

Optionally, the transparent cathode is comprised of a transparent metal oxide.

Optionally, the transparent cathode is composed of a simple metal.

Optionally, the transparent cathode is comprised of a metal alloy.

Optionally, the material of the electron injection layer comprises at least one of:

gadolinium, samarium, dysprosium, erbium, cerium and terbium.

Optionally, the first display area comprises:

a plurality of pixel units, each pixel unit including a plurality of sub-pixels arranged in a row direction and a column direction;

the distance between at least one sub-pixel in the sub-pixels of the same row and other sub-pixels in the column direction is greater than 0, and/or the distance between at least one sub-pixel in the sub-pixels of the same column and other sub-pixels in the row direction is greater than 0.

Optionally, an area of a sub-pixel in the first display region is larger than an area of a sub-pixel in the second display region.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:

according to the embodiment of the disclosure, for the organic light emitting diode in the first display area, the transparent cathode can be made of the transparent metal oxide, and the transparent metal oxide has higher transmittance and lower reflectivity relative to the composite alloy of magnesium and silver, so that light can be ensured to smoothly enter the image acquisition device through the first display area, and the image acquisition device acquires a clear image.

However, the work function of the transparent metal oxide is higher than that of the composite alloy of magnesium and silver, so that the ability of generating electrons is weak, and for this reason, the embodiment of the present disclosure adds an electron injection layer between the transparent cathode and the electron transport layer to assist the transparent cathode to generate electrons, so that enough electrons can be generated on the transparent cathode side of the organic light emitting diode to excite the organic material layer to emit light, thereby enabling the first display region to smoothly display an image.

Further, in order to ensure that the blue sub-pixel in the first display region can emit blue light with sufficient intensity, the ratio of the aperture ratio of the blue sub-pixel in the first display region to the aperture ratio of the other color sub-pixels may be set to be larger than the ratio of the aperture ratio of the blue sub-pixel in the second display region to the aperture ratio of the other color sub-pixels.

The lifetime of the blue sub-pixel and the intensity of the emitted blue light may be further increased with respect to the second display area to compensate for the problem that the blue sub-pixel is affected by the weak ability of the transparent cathode and the electron injection layer to generate electrons, which results in a shorter lifetime and a lower intensity of emitted light than the other color sub-pixels. Under the condition that the electron injection layer is added between the transparent cathode and the electron transmission layer to assist the transparent cathode to generate electrons, the blue sub-pixel in the first display area can emit blue light with enough brightness to be mixed with light emitted by other color sub-pixels to form light with accurate chromaticity, so that color cast is avoided.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

Fig. 1 is a schematic diagram illustrating an organic light emitting diode display panel according to an embodiment of the present disclosure.

Fig. 2 is a schematic diagram illustrating another organic light emitting diode display panel according to an embodiment of the present disclosure.

Fig. 3 is a schematic view illustrating still another organic light emitting diode display panel according to an embodiment of the present disclosure.

Fig. 4 is a schematic diagram showing an arrangement of sub-pixels based on the related art.

Fig. 5 is a schematic diagram illustrating an arrangement of sub-pixels in a first display region according to an embodiment of the disclosure.

Fig. 6 is a schematic diagram illustrating an arrangement of sub-pixels in the first display region according to an embodiment of the present disclosure.

Fig. 7 is a schematic diagram illustrating an arrangement of sub-pixels in a first display region according to an embodiment of the present disclosure.

Fig. 8 is a schematic block diagram illustrating a terminal according to an embodiment of the present disclosure.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

Embodiments of the present disclosure provide a terminal, which may be an electronic device, such as a mobile phone, a tablet computer, a personal computer, and the like, including an Organic Light-Emitting Diode (OLED) display panel and an image capture device, where the image capture device may be a front camera of the terminal.

Based on the structure, the image acquisition device can acquire an image of one side of the display panel arranged on the terminal (hereinafter referred to as the front side of the terminal) through the organic light emitting diode display panel, so that the image acquisition device does not need to be arranged on the front side of the terminal, and the screen occupation ratio of the terminal is improved.

Wherein the first display area is not limited to one area nor one type of area. The second display area is not limited to one area nor to a class of areas.

In addition, in consideration of image acquisition of the image acquisition device, some adjustment needs to be performed on the structure of the first display area, so that the transmittance of the first display area is greater than that of the second display area, and therefore a large proportion of light rays irradiated on the first display area can enter the image acquisition device through the first display area, and the image acquisition device acquires a clear image.

The transparent cathode of the organic light emitting diode is generally made of a magnesium and silver composite alloy, but the silver has low transmittance and high reflectivity, and light entering the image acquisition device through the first display area is seriously influenced.

According to an embodiment of the present disclosure, the organic light emitting diode in the first display region includes a transparent cathode, an electron injection layer, an electron transport layer, an organic material layer, a hole transport layer, a hole injection layer, an anode;

the aperture opening ratio of the blue sub-pixel in the first display area is greater than the aperture opening ratio of the blue sub-pixel in the second display area, and the aperture opening ratio of the blue sub-pixel in the first display area is greater than the aperture opening ratio of the blue sub-pixel in the second display area.

In one embodiment, for the organic light emitting diode in the first display region, the transparent cathode may be made of a transparent metal oxide, and the transparent metal oxide has a higher transmittance and a lower reflectance compared to a composite alloy of magnesium and silver, so that it is ensured that light can smoothly enter the image capturing device through the first display region, so that the image capturing device captures a clear image.

In addition, although the electron injection layer is added between the transparent cathode and the electron transport layer to assist the transparent cathode in generating electrons, the electron injection layer is weaker than a composite alloy of magnesium and silver, which results in a reduction in the light emission intensity of each color sub-pixel in the first display region and even a reduction in the lifetime, and the influence on the blue sub-pixel is larger than that on the other color sub-pixels.

Under the same condition, the service life and the light emitting brightness of the blue sub-pixel are lower than those of the other color sub-pixels, such as the red sub-pixel and the green sub-pixel, so that in general, for example, in the second display region, the aperture ratio of the blue sub-pixel is set to be larger than that of the other color sub-pixels. So as to prolong the service life of the color sub-pixel and make the intensity of blue light emitted by the blue sub-pixel close to that of light emitted by other color sub-pixels.

For example, in the second display region, the aperture ratio of the blue sub-pixel is 10%, the aperture ratio of the red sub-pixel is 4%, and the aperture ratio of the green sub-pixel is 8%.

However, the blue sub-pixel is affected by the weak ability of the transparent cathode and the electron injection layer to generate electrons, which results in a shorter lifetime and a lower intensity of emitted light than other color sub-pixels, and in order to ensure that the blue sub-pixel in the first display region can emit blue light with sufficient intensity, the aperture ratio of the blue sub-pixel in the first display region to other color sub-pixels may be set to be larger than the aperture ratio of the blue sub-pixel in the second display region to other color sub-pixels.

For example, in the first display region, the aperture ratio of the blue sub-pixel is 22%, the aperture ratio of the red sub-pixel is 6%, and the aperture ratio of the green sub-pixel is 15%.

The ratio of the aperture ratio of the blue sub-pixel to the red sub-pixel in the first display region is 22/6, which is greater than the ratio of the aperture ratio of the blue sub-pixel to the red sub-pixel in the second display region 10/4, and the ratio of the aperture ratio of the blue sub-pixel to the green sub-pixel in the first display region is 22/15 which is greater than 10/8.

Optionally, the organic light emitting diode display panel further includes:

In one embodiment, since the electron injection layer is added between the transparent cathode and the electron transport layer in the first display region, it is used to assist the transparent cathode to generate electrons, but the second display region still serves as the transparent cathode through the composite alloy layer and generates electrons. In the process of manufacturing the transparent cathode formed by the composite alloy layer through the patterning process, a masking process is generally adopted, a mask is arranged on the composite alloy layer, and then the area, which does not correspond to the mask, in the composite alloy layer is removed.

However, since the substance (e.g., solution, gas, light) for removing the composite alloy layer does not move downward along the vertical mask in a direction obliquely toward the mask, the composite alloy layer is not completely removed in a region outside the edge of the mask, but gradually decreases in thickness from a region closer to the mask to a region farther from the mask until the composite alloy layer is completely removed, and the macroscopic expression is that the thickness of the composite alloy layer gradually decreases to 0 in a region outside the edge of the second display region.

Similarly, the same applies to the transparent cathode and the electron injection layer in the first display region, that is, the thicknesses of the transparent cathode and the electron injection layer are gradually reduced to 0 in a region outward from the edge of the first display region.

This results in a transition region at the interface between the first display region and the second display region, where both the transparent cathode and the electron injection layer and the composite alloy layer are present, and the cathode side of the transition region is less capable of generating electrons than the second display region, and the first display region is stronger, and the blue sub-pixel in the transition region has a shorter lifetime and a lower intensity than the first display region, so that the aperture ratio of the blue sub-pixel to the aperture ratio of the other color sub-pixels in the transition region needs to be increased, but the increase is less relative to the first display region.

Therefore, the aperture ratio of the blue sub-pixel in the transition region can be set to be smaller than the aperture ratio of the blue sub-pixel in the first display region and larger than the aperture ratio of the blue sub-pixel in the second display region; the ratio of the aperture ratios of the blue sub-pixels to the other color sub-pixels in the transition region is smaller than the ratio of the aperture ratios of the blue sub-pixels to the other color sub-pixels in the first display region and larger than the ratio of the aperture ratios of the blue sub-pixels to the other color sub-pixels in the second display region.

Therefore, the blue sub-pixel in the transition region can emit enough blue light without mixing with light emitted by other color sub-pixels to form light with accurate chromaticity, thereby avoiding color cast.

Based on the above embodiment, the thickness of the composite alloy layer gradually decreases to 0 in a section of the area outward from the edge of the second display area; in a section of area outward from the edge of the first display area, the thicknesses of the transparent cathode and the electron injection layer are gradually reduced to 0, namely the composite alloy layer on one side of the transition area close to the first display area is less, and the ability of generating electrons on one side of the transparent cathode and the electron injection layer is weaker; and the composite alloy layer on the side close to the second display area is less, the transparent cathode and the electron injection layer are less, and the capability of generating electrons on the cathode side is stronger.

So that the ability to generate electrons at the cathode side is different at different regions within the transition region, then according to an embodiment of the present disclosure, the transition region may be divided into a first transition sub-region near one side of the first display region and a second transition region near one side of the second display region. In the first transition sub-region, the thicknesses of the transparent cathode and the electron injection layer in the first transition sub-region are greater than the thickness of the composite alloy layer, and in the second transition sub-region, the thickness of the composite alloy layer is greater than the thicknesses of the transparent cathode and the electron injection layer.

Furthermore, for the first transition sub-region and the second transition sub-region, the aperture opening ratio of the blue sub-pixel in the first transition sub-region may be set to be greater than the aperture opening ratio of the blue sub-pixel in the second transition sub-region; the aperture ratio of the blue sub-pixel in the first transition sub-region to the other color sub-pixels is larger than that of the blue sub-pixel in the second transition sub-region to the other color sub-pixels, so that the blue sub-pixels in the first transition sub-region and the second transition sub-region can emit enough blue light and not too much blue light to be mixed with the light emitted by the other color sub-pixels to form light with accurate chromaticity, and color cast is avoided

Optionally, the transparent cathode is comprised of a transparent metal oxide.

In one embodiment, the transparent metal oxidized material comprises at least one of:

indium tin oxide, indium gallium zinc oxide.

The transparent metal made of the material is oxidized to be used as a cathode, and compared with a cathode made of a composite alloy of magnesium and silver, the transparent metal has high transmittance and low reflectivity, and the overall transmittance of the display panel can be improved.

It should be noted that indium tin oxide and indium gallium zinc oxide are just a few of the options for transparent metal oxide materials that are examples of the present disclosure, and the present disclosure can also make the cathode from other metal oxides with higher transmittance.

Optionally, the transparent cathode is composed of a simple metal.

aluminum, magnesium, calcium, silver, lithium.

The cathode is made of the metal simple substance of the material, and compared with the cathode made of the composite alloy of magnesium and silver, the cathode is high in transmittance and low in reflectivity, and the overall transmittance of the display panel can be improved.

It should be noted that aluminum, magnesium, calcium, silver, and lithium are just a few choices for the simple metal substance exemplified in the present disclosure, and the cathode may also be formed by other simple metal substances with higher transmittance in the present disclosure.

Optionally, the transparent cathode is comprised of a metal alloy.

In one embodiment, the material of the metal alloy comprises at least one of:

lithium aluminum alloy, calcium aluminum alloy.

The cathode is made of the metal alloy of the materials, and compared with the cathode made of the composite alloy of magnesium and silver, the cathode is high in transmittance and low in reflectivity, and the overall transmittance of the display panel can be improved.

It should be noted that lithium aluminum alloy and calcium aluminum alloy are only a few choices for metal alloys as examples of the present disclosure, and the present disclosure may also constitute the cathode by other metal alloys with higher transmittance.

gadolinium, samarium, dysprosium, erbium, cerium and terbium.

Optionally, the transparent metal oxidized material comprises at least one of:

indium tin oxide, indium gallium zinc oxide.

As shown in fig. 1, the organic light emitting diode display panel includes a pixel defining layer disposed between adjacent organic light emitting diodes. The pixel defining layer is generally made of an organic material, and a layer structure formed by the organic material is generally thicker, but the thickness of each layer structure in the organic light emitting diode is generally lower, so that after the organic light emitting diode is formed, a height difference exists between the surface of the organic light emitting diode and the surface of the pixel defining layer, and the organic light emitting diode display panel is macroscopically more concave.

And the boundary of the pixel defining layer is not vertical generally but inclined, so that on one hand, in the process that light passes through the first display area, the light path is changed when air medium in the recess enters the inclined boundary, and partial light is not emitted into the image acquisition equipment below the first display area, so that the quality of the image acquired by the image acquisition equipment is influenced.

Although the organic light emitting diode is manufactured, a structure such as a cover glass is adhered to the surface of the organic light emitting diode, the adhesive for adhesion is thin and cannot fill the recess, which still causes the above-mentioned problems.

It should be noted that the structure shown in the drawings of the embodiments of the present disclosure is merely an exemplary illustration of the present disclosure.

For example, the display panel in fig. 1 may include transistors, but embodiments of the present disclosure may also be implemented based on a display panel that does not include transistors, for example, transistors fabricated on the periphery of the display panel.

Therefore, it should be understood that the structure shown in the drawings of fig. 1 and the structure shown in the drawings of the following embodiments are not intended to limit the embodiments of the present disclosure, but are merely one implementation manner of the embodiments of the present disclosure.

Fig. 2 is a schematic diagram illustrating another organic light emitting diode display panel according to an embodiment of the present disclosure. As shown in fig. 2, the organic light emitting diode display panel further includes:

a pixel defining layer 7 disposed between adjacent ones of the organic light emitting diodes; among them, the organic light emitting diode may include a transparent cathode 6, an electron injection layer 11, an electron transport layer 12, an organic light emitting layer 9, a hole transport layer 14, a hole injection layer 13, and an anode 8.

In addition, the organic light emitting diode display panel may sequentially include, from bottom to top, a substrate 1, a buffer layer 2, a gate insulating layer 3, an interlayer dielectric layer 4, and a planarization layer 5, and the driving transistor includes an active layer 16, a gate electrode 17, a source electrode 18, and a drain electrode 19.

Wherein the material of the pixel defining layer 7 is an inorganic material, and the thickness of the pixel defining layer 7 is the same as that of the organic light emitting diode.

The inorganic material includes at least one of:

silicon oxide, silicon nitride, silicon carbonitride.

According to the embodiment of the disclosure, the pixel defining layer can be formed by an inorganic material, and the inorganic material can form a layer structure by sputtering and evaporation process, so that the inorganic material can be made thinner compared with the organic material which needs to form the layer structure by coating, the thickness of the pixel defining layer is made to be the same as that of the organic light emitting diode, so that a concave part is not formed at a position corresponding to the organic light emitting diode, and the surface flatness of the organic light emitting diode display panel is ensured.

Therefore, in the process that the light rays pass through the first display area, on one hand, the light rays enter the inclined boundary from the transparent filling layer, and the refractive index of the transparent filling layer is larger than that of the air, so that the light path change degree of the light rays is smaller relative to the situation that the light rays enter the inclined boundary from the air, and the light rays can be favorably ensured to enter the image acquisition equipment below the first display area; on the other hand, the surface of the organic light emitting diode display panel after the transparent filling layer is arranged is flat, so that diffraction caused by depression can be avoided to the greatest extent. Accordingly, the quality of the image collected by the image collecting equipment can be ensured.

Fig. 3 is a schematic view illustrating still another organic light emitting diode display panel according to an embodiment of the present disclosure. As shown in fig. 3, the organic light emitting diode display panel further includes:

a pixel defining layer disposed between adjacent ones of the organic light emitting diodes; among them, the organic light emitting diode may include a transparent cathode 6, an electron injection layer 11, an electron transport layer 12, an organic light emitting layer 9, a hole transport layer 14, a hole injection layer 13, and an anode 8.

A transparent filling layer 14 disposed above the organic light emitting diode, wherein the surface of the transparent filling layer is flat and flush with the surface of the pixel defining layer 7; or on the organic light emitting diode and the pixel defining layer 7, and the surface of the transparent filling layer 14 is flat.

According to an embodiment of the present disclosure, the material of the transparent filling layer includes at least one of:

OCA (optical Clear adhesive) optical cement, water cement and tetrafluoroethylene.

According to the embodiment of the present disclosure, a transparent filling layer may be disposed on the organic light emitting diode, and since the transparent filling layer may be disposed on the organic light emitting diode as shown in fig. 3, and has a flat surface and a surface flush with the surface of the pixel defining layer, or disposed on the organic light emitting diode and the pixel defining layer (not shown in the figure), the surface of the transparent filling layer is flat, in which case, the recess of the organic light emitting diode shown in fig. 1 may be filled, so as to ensure the flat surface of the organic light emitting diode display panel.

Therefore, in the process that light rays pass through the first display area, on one hand, the light rays enter the inclined boundary from the transparent filling layer, and the refractive index of the transparent filling layer is larger than that of air, so that the light path change degree of the light rays is smaller relative to the situation that the light rays enter the inclined boundary from the air, and the light rays are favorably ensured to enter the image acquisition equipment below the first display area; on the other hand, the surface of the organic light emitting diode display panel after the transparent filling layer is arranged is flat, so that diffraction caused by depression can be avoided to the greatest extent. Accordingly, the quality of the image collected by the image collecting equipment can be ensured.

In addition to the above-mentioned improvement of the transmittance of the first display region by adjusting the transparent cathode material, the transmittance of the first display region may be improved according to the following embodiment such that the transmittance of the first display region is greater than the transmittance of the second display region.

In one embodiment, the sub-pixels in the pixel unit in the display panel are arranged in a matrix along a row direction and a column direction, and the distance between each sub-pixel in the sub-pixels in the same row in the column direction is 0, and the distance between each sub-pixel in the sub-pixels in the same column in the row direction is 0.

The structure can enable a slit which is obvious along the row direction to exist between sub-pixels of adjacent rows and a slit which is obvious along the column direction to exist between sub-pixels of adjacent columns, light can be diffracted when passing through the slits, the more neat the boundary of the slits, the stronger the diffraction effect is, and even the condition that light rays passing through the two slits are interfered can exist, and the more neat the boundary of the slits, the stronger the interference effect is.

Because image acquisition equipment is arranged below the first display area, if strong diffraction and interference phenomena occur to light passing through the first display area, obvious light and dark alternate stripes can be formed, and therefore the image acquired by the image acquisition equipment has the obvious light and dark alternate stripes, and the shooting effect is influenced.

According to an embodiment of the present disclosure, the organic light emitting diode display panel includes a plurality of pixel units, each pixel unit including a plurality of sub-pixels distributed along a row direction and a column direction;

and the distance between adjacent sub-pixels in the sub-pixels of the same row in the column direction is greater than 0, and/or the distance between adjacent sub-pixels in the sub-pixels of the same column in the row direction is greater than 0.

Based on the embodiment of the disclosure, by setting the distance between at least one sub-pixel in the sub-pixels of the same row and other sub-pixels in the column direction to be greater than 0, the slit boundaries in the row direction between the sub-pixels of adjacent rows can be irregular, so that the interference effect generated by the slits in the row direction is reduced. Similarly, by setting the distance between at least one sub-pixel in the sub-pixels in the same column and other sub-pixels in the row direction to be greater than 0, the slit boundaries in the column direction between the sub-pixels in adjacent columns can be irregular, thereby reducing the interference effect generated by the slits in the column direction. And then avoid the light through first display area to take place stronger diffraction or interference phenomenon to guarantee under the first display area in the image that image acquisition equipment gathered can not have comparatively obvious alternate stripe of light and shade, be favorable to guaranteeing good shooting effect.

Next, taking the slits in the row direction as an example, the related art and the embodiment of the present disclosure are compared by fig. 4 and 5.

Fig. 4 is a schematic diagram showing an arrangement of sub-pixels based on the related art. Fig. 5 is a schematic diagram illustrating an arrangement of sub-pixels in a first display region according to an embodiment of the disclosure.

As shown in fig. 4 and 5, the pixel unit includes a red sub-pixel, a green sub-pixel, and a blue sub-pixel.

In fig. 4, the distance in the column direction of all the sub-pixels in the red sub-pixels of the same row is equal to 0, and the distance in the column direction of all the sub-pixels in the green sub-pixels of the same row is equal to 0, which makes the boundaries of the slits in the row direction formed between the red sub-pixels and the green sub-pixels of the same row well-ordered.

In fig. 5, the distance between adjacent sub-pixels in the red sub-pixels of the same row in the column direction is greater than 0, and the distance between adjacent sub-pixels in the green sub-pixels of the same column in the row direction is greater than 0, which makes the boundaries of the slits in the row direction formed between the red sub-pixels of one row and the green sub-pixels of one row irregular.

Compared with the slit shown in fig. 4, the light is weak in diffraction and diffraction effects generated by the slit in fig. 5, and the arrangement mode of the sub-pixels in the first display area is set based on the embodiment, so that the phenomenon of strong diffraction or interference of the light passing through the first display area can be avoided, and therefore, the situation that the image collected by the image collecting device under the first display area has obvious light and dark alternate stripes is avoided, and the good shooting effect is favorably ensured.

In one embodiment, the distance between adjacent sub-pixels in the sub-pixels of the same row in the column direction is greater than 0, and/or the distance between adjacent sub-pixels in the sub-pixels of the same column in the row direction is greater than 0. Therefore, the distance between the largest number of sub-pixels in the same row and other sub-pixels in the column direction is larger than 0, so that slit boundaries between the sub-pixels in adjacent rows in the row direction are irregular to a greater extent, and slit boundaries between the sub-pixels in adjacent columns in the column direction are irregular to a greater extent, and the phenomenon that light rays passing through the first display area are subjected to stronger diffraction or interference is favorably reduced.

In one embodiment, as shown in fig. 6, the distance between adjacent sub-pixels in the column direction is d1, and the distance between adjacent sub-pixels in the row direction is d 1/2.

According to the arrangement, the distance of the adjacent sub-pixels in the same row in the column direction can be ensured to be the largest, so that the slit boundaries between the sub-pixels in the adjacent rows along the row direction are irregular to the greatest extent, and the phenomenon of strong diffraction or interference of light passing through the first display area is favorably reduced.

In one embodiment, as shown in fig. 7, the distance between adjacent sub-pixels in the row direction is d2, and the distance between adjacent sub-pixels in the column direction is d 2/2.

According to the arrangement, the distance between the adjacent sub-pixels in the same column of sub-pixels in the column direction can be ensured to be the largest, so that the slit boundaries between the sub-pixels in the adjacent columns in the column direction are irregular to the greatest extent, and the phenomenon of strong diffraction or interference of light passing through the first display area is favorably reduced.

In one embodiment, the area of the sub-pixels in the first display region is larger than the area of the sub-pixels in the second display region.

Because the image acquisition device is arranged below the first display area, when the image acquisition device acquires an image, the image on the front side of the terminal needs to be acquired through the first display area, but it needs to be ensured that the first display area has a display function, which needs to ensure that the first display area has a higher transmittance on the basis of having the display function, and at least the transmittance is higher than that of the second display area.

According to the embodiment, the area of the sub-pixels in the first display area is larger than that of the sub-pixels in the second display area, so that the number of the sub-pixels in the unit area of the first display area can be reduced, and the number of the sub-pixels in the unit area is smaller, so that the number of signal lines for connecting the sub-pixels is smaller, the shielding of the signal lines in the first display area on light rays can be reduced, the transmittance of the first display area is effectively improved, and clear images can be acquired by image acquisition equipment below the first display area.

Preferably, for the case that a transition region exists between the first display region and the second display region, the density of sub-pixels in the transition region may also be set to be greater than the density of sub-pixels in the first display region and less than the density of sub-pixels in the second display region.

The larger the density of the sub-pixels is, the clearer the displayed image is, so that the definition of the displayed image can be ensured to be gradually reduced from the second display area, the transition area and the first display area, so that a user can not feel that the difference between the definitions of the first display area and the second display area is too large when the user visually watches the image, and the display effect is improved.

Further, for the case that the transition region includes the first transition sub-region and the second transition sub-region, the density of sub-pixels in the first transition sub-region may be set to be less than the density of sub-pixels in the second transition sub-region, so that from the second display region, the second transition sub-region is obtained, then to the first transition sub-region, and finally to the first display region, the definition of the displayed image is reduced more gradually, and it is further ensured that the difference between the definitions of the first display region and the second display region is not too large when the user visually views the image, so as to improve the display effect.

Fig. 8 is a schematic block diagram illustrating a terminal 800 in accordance with an embodiment of the present disclosure. For example, the apparatus 800 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, an exercise device, a personal digital assistant, and the like.

Referring to fig. 8, the apparatus 800 may include one or more of the following components: processing component 802, memory 804, power component 806, multimedia component 808, audio component 810, input/output (I/O) interface 812, sensor component 814, and communication component 816.

The processing component 802 generally controls overall operation of the device 800, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing components 802 may include one or more processors 820 to execute instructions. Further, the processing component 802 can include one or more modules that facilitate interaction between the processing component 802 and other components. For example, the processing component 802 can include a multimedia module to facilitate interaction between the multimedia component 808 and the processing component 802.

The memory 804 is configured to store various types of data to support operations at the apparatus 800. Examples of such data include instructions for any application or method operating on device 800, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 804 may be implemented by any type or combination of volatile or non-volatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.

Power components 806 provide power to the various components of device 800. The power components 806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the apparatus 800.

The multimedia component 808 includes a screen that provides an output interface between the device 800 and a user. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 808 includes a front facing camera and/or a rear facing camera. The front camera and/or the rear camera may receive external multimedia data when the device 800 is in an operating mode, such as a shooting mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.

The audio component 810 is configured to output and/or input audio signals. For example, the audio component 810 includes a Microphone (MIC) configured to receive external audio signals when the apparatus 800 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may further be stored in the memory 804 or transmitted via the communication component 816. In some embodiments, audio component 810 also includes a speaker for outputting audio signals.

The I/O interface 812 provides an interface between the processing component 802 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.

The sensor assembly 814 includes one or more sensors for providing various aspects of state assessment for the device 800. For example, the sensor assembly 814 may detect the open/closed status of the device 800, the relative positioning of components, such as a display and keypad of the device 800, the sensor assembly 814 may also detect a change in the position of the device 800 or a component of the device 800, the presence or absence of user contact with the device 800, the orientation or acceleration/deceleration of the device 800, and a change in the temperature of the device 800. Sensor assembly 814 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 814 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 814 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 816 is configured to facilitate communications between the apparatus 800 and other devices in a wired or wireless manner. The device 800 may access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 816 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 816 further includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

In an example embodiment, the apparatus 800 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors, or other electronic components.

In an exemplary embodiment, a non-transitory computer-readable storage medium comprising instructions, such as the memory 804 comprising instructions, executable by the processor 820 of the apparatus 800 is also provided. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A terminal, comprising:

2. A terminal according to claim 1, wherein the organic light emitting diode display panel further comprises:

3. The terminal according to claim 2, wherein the transition region comprises a first transition sub-region and a second transition sub-region, the first transition sub-region is disposed at a side of the transition region close to the first display region, and the second transition region is disposed at a side of the transition region close to the second display region;

4. The display panel of claim 1, wherein the transparent cathode is comprised of a transparent metal oxide.

5. The display panel according to claim 1, wherein the transparent cathode is composed of a simple metal.

6. The display panel of claim 1, wherein the transparent cathode is comprised of a metal alloy.

7. A terminal according to claim 1, characterized in that the material of the electron injection layer comprises at least one of:

gadolinium, samarium, dysprosium, erbium, cerium and terbium.

8. The terminal according to any of claims 1 to 5, wherein the first display area comprises:

9. A terminal as claimed in any one of claims 1 to 5, wherein the area of sub-pixels in the first display region is greater than the area of sub-pixels in the second display region.