CN217157259U - Touch display screen based on direct type mini LED backlight module - Google Patents

Abstract

The utility model provides a touch display screen based on straight following formula mini LED backlight unit. The touch display screen comprises a glass cover plate, an LCD display panel and a direct type mini LED backlight module which are sequentially stacked from top to bottom. The direct type mini LED backlight module comprises a direct type mini LED lamp panel, a mini LED driving circuit and a sensing device. The sensing device comprises a plurality of X electrodes and a plurality of Y electrodes, wherein the X electrodes are distributed on a first plane, and the Y electrodes are distributed on a second plane. The sensing device is sensitive to changes in capacitance between the X and Y electrodes due to changes in proximity between the glass cover plate and the sensing device. And the mini LED driving circuit adjusts the light emission of the direct type mini LED lamp panel according to the capacitance change.

Description

Touch display screen based on direct type mini LED backlight module

Technical Field

The utility model relates to a show technical field, especially relate to a touch display screen based on straight following formula mini LED backlight unit.

Background

Recently, various input devices such as a keyboard, a mouse, a trackball, a joystick, and a digitizer have been used to enable user interaction with home electronic devices or various types of information communication devices. However, the input device as described above causes inconvenience in learning use of the input device and requires an additional operation space, which makes it difficult to improve the integrity of the product. Accordingly, there is an increasing demand for an input device having a simple interface and capable of reducing malfunction due to erroneous input. In accordance with such a demand, a touch screen panel has been developed that receives input information of a user directly interacting with a screen by using his or her hand or a pen. A touch screen may include a touch sensor panel, which may be a transparent panel with a touch-sensitive surface, and a display device such as a Liquid Crystal Display (LCD), a Light Emitting Diode (LED) display, or an Organic Light Emitting Diode (OLED) may be partially or completely located behind the panel so that the touch-sensitive surface may cover at least a portion of the viewable area of the display device. The conventional touch screen structure includes, from bottom to top, a backlight module 100, an LCD display 101, a touch module 102, and a glass cover plate 103. For example, in chinese patent CN103279244B CN102339181A, the touch module 102 substrate is made of a single layer of organic glass as a substrate, and a transparent conductive film is uniformly forged on the upper and lower outer surfaces of the organic glass, so as to form a three-layer structure from top to bottom: an upper conductive layer, a non-conductive glass substrate, and a lower conductive layer. The upper conductive layer is a shielding layer, and plays a role in shielding internal electric signals. The lower conducting layer is a key part of the whole touch screen, and direct lead wires are arranged at four corners or four edges and are responsible for detecting the position of a touch point. Touch screens may allow a user to perform various functions by touching the sensor panel with a finger, stylus, or other object at a location typically indicated by a User Interface (UI) displayed by the display device. Generally, when a finger touches the conductive glass cover 103, a coupling capacitance is formed between the user and the touch screen surface due to the electric field of the human body, and for high frequency current, the capacitance is a direct conductor, so the finger draws a small current from the contact point, thereby inducing a capacitance (between the finger and the upper conductive layer) and a parasitic capacitance (between the upper and lower conductive layers). By sensing capacitance and parasitic capacitance changes, a touch and touch location on the touch sensor panel can be identified, and the computing system can then interpret the touch from the display appearing at the time of the touch and can then perform one or more touch-based actions. The touch module 102 is disposed on the light emitting surface of the LCD display 101, and affects the brightness of the touch screen to a certain extent.

In the case of some touch sensitive systems, physical touching on the display is not required to detect a touch. For example, US6323846B1 and US8046721B2, in some capacitive touch sensing systems, the fringe electric field used to detect a touch may extend beyond the surface of the display, and objects near the surface may be detected near the surface without actually touching the surface. Capacitive touch sensor panels can be formed from a matrix of transparent, translucent, or opaque conductive plates made of a material such as Indium Tin Oxide (ITO). In some examples, the conductive plate may be formed of other materials, including conductive polymers, metal meshes, graphene, nanowires (e.g., silver nanowires), or nanotubes (e.g., carbon nanotubes). As described above, portions of the capacitive touch sensor panel may be overlaid on a display to form a touch screen, in part due to their substantial transparency. Some touch screens can be formed by integrating touch sensing circuitry at least partially into the display pixel stackup (i.e., the stackup material layers that form the display pixels). In some cases, stray capacitance (stray capacitance) may exist between a touch node electrode used to sense on the touch sensor panel and other components of a device containing the touch sensor panel, which may be referenced to ground (also referred to herein as device ground). These parasitic capacitances can introduce errors and/or offsets in the touch output of the touch sensor panel. It is therefore beneficial to reduce or eliminate such parasitic or stray capacitances.

However, when a display device having a touch screen panel is manufactured by applying the touch screen panel on a display panel, the touch screen panel and the display panel are generally manufactured by different manufacturers. In other words, since a circuit board including a driving circuit for a touch screen panel and a circuit board including a driving circuit for a display panel are separately manufactured, an integration problem of combining two panels into a single panel occurs.

In addition, in order to communicate between the display panel, the touch screen panel, and the host system, a Low Voltage Differential Signaling (LVDS) cable for the display panel and a Universal Serial Bus (USB) cable for the touch screen panel are required.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the main technical problem who solves provides a touch display screen based on straight following formula mini LED backlight unit. The touch display screen comprises a glass cover plate, an LCD display panel and a direct type mini LED backlight module which are sequentially stacked from top to bottom. The direct type mini LED backlight module comprises a direct type mini LED lamp panel, a mini LED driving circuit and a sensing device. The sensing device comprises a plurality of X electrodes and a plurality of Y electrodes, the X electrodes are distributed on a first plane, and the Y electrodes are distributed on a second plane. The sensing device is sensitive to changes in capacitance between the X and Y electrodes due to changes in proximity between the glass cover plate and a user's finger. And the mini LED driving circuit adjusts the light emission of the direct type mini LED lamp panel according to the capacitance change.

The utility model discloses a sensing device sets up on straight following mini LED backlight unit, has avoided its setting on LCD display panel's play plain noodles and the luminance loss and the resolution ratio loss of precision that cause.

The utility model discloses a touch display screen based on straight following formula mini LED backlight unit is convenient for splice and forms the touch display screen of bigger size. The traditional spliced touch display screen needs to be integrally attached to a touch module, and on one hand, the process is complex; on the other hand, the touch module needs to be attached to the LCD display panel in a highly smooth manner, so that the fault tolerance rate is low; on the other hand, the touch module may also have an effect on the display effect. The utility model discloses a sensing device directly sets up on straight following mini LED backlight unit, rather than laminating on LCD display panel, has avoided the display screen of traditional concatenation type because of the above-mentioned problem that needs later stage laminating touch module to cause, has simplified production technology, has also reduced manufacturing cost.

The utility model discloses a sensing device sets up on straight following mini LED backlight unit, has reduced the touch-control module that sets up alone among the prior art, realizes touch-sensitive screen display module's integration. And simultaneously, the utility model discloses a touch-sensitive screen display screen can reach the effect of thickness attenuate.

In a preferred embodiment, the direct type mini LED backlight module further comprises a reflector arranged on the direct type mini LED lamp panel; the reflector comprises a plurality of reflecting cup structures with upper and lower openings, the mini LED light source is periodically arranged in the opening of the reflecting cup, and the reflector reflects part of light distribution of the mini LED light source to one side of the display surface of the direct type mini LED backlight module.

In a preferred embodiment, the X electrode and the Y electrode are respectively disposed on a light incident side and a light exiting side of the reflection housing.

In a preferred embodiment, the X electrode and the Y electrode are respectively disposed on the direct type mini LED lamp panel and on the light incident side of the reflector.

In a preferred embodiment, the direct type mini LED lamp panel is provided with an encapsulation layer, and the X electrode and the Y electrode are respectively arranged on a substrate of the direct type mini LED lamp panel and on the top of the encapsulation layer.

In a preferred embodiment, the touch display screen further comprises: an LCD display panel driver formed on a portion of a rear surface of the direct type mini LED backlight module and including a plurality of display panel driving circuits for driving the display panel; a sensing device driver formed on a portion of a rear surface of the direct type mini LED backlight module, adjacent to the display panel driver, and including a plurality of touch screen panel driving circuits for driving the touch panel; the mini LED driving circuit is formed on a part of the rear surface of the direct type mini LED backlight module, is adjacent to the LCD display panel in a driving manner, and comprises a plurality of direct type mini LED backlight module driving circuits used for driving the direct type mini LED backlight module; and a connector formed on the LCD display panel driver and including a first connector drivingly connected to at least one of the LCD display panels, a second connector drivingly connected to at least one of the sensing devices, and a third connector connected to at least one of the mini LED driving circuits.

In a preferred embodiment, the adjusting, by the mini LED driving circuit according to the capacitance change, the light emission of the direct type mini LED lamp panel includes: judging the area of the capacitance change; identifying a mini LED corresponding to the area with the changed capacitance; and controlling the switch of the corresponding mini LED.

Drawings

The invention and its advantages will be better understood by studying the following non-limiting examples, and by studying the detailed description of specific embodiments shown in the appended drawings, in which:

FIG. 1 is an exploded view of a prior art touch display screen.

Fig. 2 is an exploded view of a touch display screen based on a direct type mini LED backlight module according to embodiment 1 of the present invention.

Fig. 3 is an exploded view of a direct type mini LED backlight module according to embodiment 1 of the present invention.

Fig. 4 is a perspective view of a reflection cover according to embodiment 1 of the present invention.

Fig. 5 is a cross-sectional view of a touch display screen based on a direct type mini LED backlight module according to embodiment 1 of the present invention.

Fig. 6 is a schematic view of the working principle of a touch display screen based on a direct type mini LED backlight module according to embodiment 1 of the present invention.

Fig. 7 is a schematic view of the drive connection according to embodiment 1 of the present invention.

Fig. 8 is a cross-sectional view of a touch display screen based on a direct type mini LED backlight module according to embodiment 2 of the present invention.

Fig. 9 is a schematic view of the working principle of a touch display screen based on a direct type mini LED backlight module according to embodiment 2 of the present invention.

Fig. 10 is a cross-sectional view of a touch display screen based on a direct type mini LED backlight module according to embodiment 3 of the present invention.

Fig. 11 is a schematic view of the working principle of a touch display screen based on a direct type mini LED backlight module according to embodiment 3 of the present invention.

Fig. 12 is a cross-sectional view of a touch display screen based on a direct type mini LED backlight module according to embodiment 4 of the present invention.

Fig. 13 is a schematic view of the working principle of a touch display screen based on a direct type mini LED backlight module according to embodiment 4 of the present invention.

Fig. 14 is a plan view of the electrode according to embodiment 5 of the present invention provided on the reflection case.

Detailed Description

Referring to the drawings, wherein like reference numbers refer to like elements throughout, the principles of the present invention are illustrated as being implemented in a suitable environment. The following description is based on illustrated embodiments of the invention and should not be taken as limiting the invention with regard to other embodiments not described in detail herein.

The word "embodiment" is used herein to mean serving as an example, instance, or illustration. In addition, the articles "a" and "an" as used in this specification and the appended claims may generally be construed to mean "one or more" unless specified otherwise or clear from context to be directed to a singular form.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

Further, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise direct contact of the first and second features through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

Example 1

First, a touch display screen based on a direct type mini LED backlight module according to embodiment 1 of the present invention will be described with reference to fig. 2 to 7. According to the utility model discloses embodiment 1's touch display screen based on straight following formula mini LED backlight unit, as shown in FIG. 2, the utility model discloses the main technical problem who solves provides a touch display screen, and this touch display screen includes that top-down piles up glass apron 201, LCD display panel 202 and straight following formula mini LED backlight unit 203 that sets up in proper order. Fig. 3 is the utility model discloses embodiment 1's straight following mini LED backlight unit 203's explosion view, straight following mini LED backlight unit 203 includes the straight following mini LED lamp plate 2031, bowl 2032 and the optics diaphragm 2033 that pile up the setting in proper order from bottom to top. The reflector 2032 is arranged on the direct type mini LED lamp panel 2031; as shown in fig. 4, the reflector 2032 includes a plurality of reflector cups 20321 with top and bottom openings 20322, the mini LED light sources 20311 are periodically disposed in the openings 20322 of the reflector cups, and the reflector 2032 reflects part of the light distribution of the mini LED light sources 20311 to one side of the display surface of the direct-type mini LED backlight module 203.

The direct type mini LED backlight module 203 is provided with a mini LED driving circuit 2034 and a sensing device 2035. The mini LED driving circuit 2034 is disposed on the back of the direct type mini LED lamp panel 2031. As shown in fig. 5, the sensing device 2035 comprises a plurality of X electrodes 20351 and a plurality of Y electrodes 20352, the plurality of X electrodes 20351 are distributed on a first plane, and the plurality of Y electrodes 20352 are distributed on a second plane. The X electrode 20351 and the Y electrode 20352 are respectively disposed on the direct-lit mini LED lamp panel 2031 and on the light incident side of the reflector 2032. The X and Y electrodes are ink-jet printed conductive silver paste, printed metal grids, or plated on the direct type mini LED lamp panel 2031 and the reflector 2032. The reflector 2032 is formed by vacuum forming or injection molding. The reflective shade 2032 may be made of a highly reflective metal material or a highly reflective polymer material.

The sensing device 2035 is sensitive to changes in capacitance between the X and Y electrodes 20351, 20352 due to changes in proximity between the glass cover 201 and a user's finger. The sensing capacitance of the sensing device 2035 adopts the projected capacitance principle. As shown in fig. 6, the sensing device 2035 is operative: the X electrode 20351 is used as a driving electrode, and is used as an antenna for transmitting a driving signal; the Y electrode 20352 is a receiving electrode as a receiving antenna for a signal. The drive signal (WaveSignal) is output from the transmit antenna, passes through the parasitic mutual capacitance at the vertical intersection of the X electrode 20351 and the Y electrode 20352, reaches the receive antenna, and is recovered by the Receiver (Receiver) of the sensing device 2035. When a finger approaches an electrode intersection, the finger interferes with an electric field at the intersection, that is, capacitance changes are generated, and the intensity of a received signal changes. The sensing device 2035 sequentially applies driving signals to each signal transmitting antenna by a time division method, and simultaneously scans signals of each receiving antenna in parallel to obtain signal strength information at the intersection of each X electrode 20351 and Y electrode 20352, so as to obtain image frame data related to the mutual capacitance of the intersection, and touch information of the whole sensor surface can be obtained by data processing of the image frame data.

The mini LED driving circuit 2034 adjusts the light emission of the direct type mini LED lamp panel 2031 according to the capacitance change.

The sensing device 2035 is arranged on the direct type mini LED backlight module 203, so that on one hand, a touch module which is separately arranged in the prior art, especially an ITO thin film layer occupying space is reduced, and integration of a touch screen display module is realized; on the other hand, the mini LED driving circuit 2034 adjusts the light emission of the direct type mini LED lamp panel 2031 to feed back user information, increases an interaction path, and further improves the accuracy of touch control. Meanwhile, the touch screen display screen of the embodiment can achieve the effect of thickness reduction. The mini LED driving circuit 2034 adjusts the light emission of the direct type mini LED lamp panel 2031 according to the capacitance change, and includes: judging the area of the capacitance change; identifying a mini LED corresponding to the area with the changed capacitance; and controlling the switch of the corresponding mini LED.

As shown in fig. 7, the touch display screen further includes: an LCD display panel driver 300, the LCD display panel driver 300 being formed on a portion of a rear surface of the direct type mini LED backlight module 203 and including a plurality of display panel driving circuits for driving the LCD display panel 202; a sensing device driver 400 formed on a portion of a rear surface of the direct type mini LED backlight module 203, adjacent to the LCD display panel driver 300, and including a plurality of touch screen panel driving circuits for driving the touch panel; the mini LED driving circuit 2034 is formed on a part of the rear surface of the direct type mini LED backlight module 203, is adjacent to the LCD display panel driver 300, and includes a plurality of direct type mini LED backlight module driving circuits for driving the direct type mini LED backlight module 203; and connectors formed on the LCD display panel driver and including a first connector 301 connected to at least one of the LCD display panel drivers, a second connector 302 connected to at least one of the sensing device drivers, and a third connector 303 connected to at least one of the mini LED driving circuits 2034. The first connector 301, the second connector 302, and the third connector 303 are connected to each other by a Central Processing Unit (CPU) 500.

Specifically, the mini LED driving circuit 2034 adjusts, according to the capacitance change, the light emission of the direct type mini LED lamp panel 2031, including: the sensing device 2035 determines the area of the capacitance change; a Central Processing Unit (CPU)500 identifies a mini LED corresponding to the region of capacitance change; the mini LED driving circuit 2034 controls the switching of the corresponding mini LED. The sensing device 2035 shares the same chip with the Central Processing Unit (CPU)500, or the sensing device 2035 is electrically and signally connected to the Central Processing Unit (CPU) 500.

The sensing device 2035 of the embodiment is disposed on the direct type mini LED backlight module 203, so as to avoid the brightness loss and the resolution precision loss caused by the arrangement on the light emitting surface of the LCD display panel 202.

The touch display screen based on the direct type mini LED backlight module is convenient to splice to form a touch display screen with a larger size. The traditional spliced touch display screen needs to be integrally attached to a touch module, and on one hand, the process is complex; on the other hand, the touch module needs to be attached to the LCD display panel in a highly smooth manner, so that the fault tolerance rate is low; on the other hand, the touch module may also have an effect on the display effect. The utility model discloses a sensing device 2035 directly sets up on straight following formula mini LED backlight unit 203, rather than laminating on LCD display panel 202, has avoided the display screen of traditional concatenation type because of the above-mentioned problem that needs later stage laminating touch module to cause, has simplified production technology, has also reduced manufacturing cost.

Example 2

Please refer to fig. 8, which is a cross-sectional view of a touch display screen based on a direct type mini LED backlight module according to embodiment 2 of the present invention. Only the differences between embodiment 2 and embodiment 1 will be described below, and the descriptions of the similarities will be omitted.

The touch display screen based on the direct type mini LED backlight module in the embodiment 2 is not provided with a reflecting cover. The plurality of X electrodes 21351 and the plurality of Y electrodes 21352 are distributed on the same plane. The sensing capacitance of the sensing device adopts the projected capacitance principle. As shown in fig. 9, the sensing device employs a mutual capacitance operating principle, and the capacitance formed by the coupling electric field between the X electrode 21351 and the Y electrode 21352 is sensitive to the change in proximity between the glass cover plate and the user's finger, thereby changing the capacitance between the electrodes. When the mutual capacitance is detected, the transverse electrodes sequentially send out excitation signals, and the longitudinal electrodes simultaneously receive the signals, so that the capacitance value of the intersection point of the transverse electrodes and the longitudinal electrodes, namely the capacitance value of the two-dimensional plane of the whole touch screen can be obtained. And calculating the coordinate of each touch point according to the two-dimensional capacitance variation data of the touch screen. Therefore, even if there are a plurality of touch points on the screen, the real coordinates of each touch point can be calculated.

Example 3

Please refer to fig. 10, which is a cross-sectional view of a touch display screen based on a direct type mini LED backlight module according to embodiment 3 of the present invention. Only the differences between embodiment 3 and embodiment 2 will be described below, and the descriptions of the similarities are omitted here.

As shown in fig. 10, a plurality of X electrodes 22351 and a plurality of Y electrodes 22352 are distributed in different planes. The sensing capacitance of the sensing device adopts the projected capacitance principle. The X electrode sets up on the base plate of straight following formula mini LED lamp plate, a plurality of Y electrodes 22352 set up the top at the encapsulation layer of straight following formula mini LED backlight unit's mini LED lamp plate. The Y electrode 22352 is an ITO electrode having an optically transparent property. As shown in fig. 11, a parasitic mutual capacitance is generated at the vertical intersection of the X-electrode 22351 and the Y-electrode 22352. When a finger approaches an electrode intersection, the finger interferes with the electric field at the intersection, i.e., generates a capacitance change.

Example 4

Please refer to fig. 12, which is a cross-sectional view of a touch display screen based on a direct type mini LED backlight module according to embodiment 4 of the present invention. Only the differences between embodiment 4 and embodiment 1 will be described below, and the descriptions of the similarities will be omitted.

As shown in fig. 12, the plurality of X electrodes 20351 and the plurality of Y electrodes 20352 are distributed on different planes. The plurality of X electrodes 20351 correspond to the positions of the plurality of Y electrodes 20352. The sensing capacitance of the sensing device adopts the projected capacitance principle. As shown in fig. 13, a parasitic mutual capacitance is generated at the vertical intersection of the X electrode 20351 and the Y electrode 20352. When a finger approaches an electrode intersection, the finger interferes with the electric field at the intersection, i.e., generates a capacitance change.

Example 5

Fig. 14 is a plan view of the X-electrode of embodiment 5 of the present invention disposed on the reflector. Only the differences between embodiment 5 and embodiment 1 will be described below, and the descriptions of the similarities will be omitted.

The plurality of X electrodes 20351 and the plurality of Y electrodes 22352 are distributed in different planes. As shown in fig. 14, a plurality of X electrodes 20351 are disposed around the opening 20322.

While the invention has been described above with reference to certain embodiments, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, as long as there is no structural conflict, the various features of the various embodiments disclosed herein can be used in any combination with one another, and the description of such combinations is not exhaustive for reasons of brevity and resource conservation. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims (6)

1. The utility model provides a touch display screen based on straight following mini LED backlight unit which characterized in that includes:

the LCD comprises a glass cover plate, an LCD display panel and a direct type mini LED backlight module which are sequentially stacked from top to bottom;

the direct type mini LED backlight module comprises a direct type mini LED lamp panel, a mini LED driving circuit and a sensing device;

the sensing device comprises a plurality of X electrodes and a plurality of Y electrodes, the X electrodes are distributed on a first plane, and the Y electrodes are distributed on a second plane;

the sensing device is sensitive to capacitance changes between the X electrode and the Y electrode caused by proximity changes between a user's finger and the glass cover plate;

and the mini LED driving circuit adjusts the light emission of the direct type mini LED lamp panel according to the capacitance change.

2. The touch display screen based on the direct type mini LED backlight module according to claim 1, wherein: the direct type mini LED backlight module also comprises a reflector which is arranged on the direct type mini LED lamp panel; the reflector comprises a plurality of reflecting cup structures with upper and lower openings, the mini LED light source is periodically arranged in the opening of the reflecting cup, and the reflector reflects part of light distribution of the mini LED light source to one side of the display surface of the direct type mini LED backlight module.

3. The touch display screen based on the direct type mini LED backlight module according to claim 2, wherein: the X electrode and the Y electrode are respectively arranged on the light incident side and the light emergent side of the reflector.

4. The touch display screen based on the direct type mini LED backlight module according to claim 2, wherein: the X electrode and the Y electrode are respectively arranged on the direct type mini LED lamp panel and on the light incident side of the reflector.

5. The touch display screen based on the direct type mini LED backlight module according to claim 1, wherein: the direct type mini LED lamp panel is provided with an encapsulation layer, and the X electrode and the Y electrode are arranged on the substrate of the direct type mini LED lamp panel and on the top of the encapsulation layer respectively.

6. The touch display screen based on the direct type mini LED backlight module according to claim 1, wherein: the touch display screen further includes:

an LCD display panel driver formed on a portion of a rear surface of the direct type mini LED backlight module and including a plurality of display panel driving circuits for driving the display panel;

a sensing device driver formed on a portion of a rear surface of the direct type mini LED backlight module, adjacent to the display panel driver, and including a plurality of touch screen panel driving circuits for driving the touch display screen;

the mini LED driving circuit is formed on a part of the rear surface of the direct type mini LED backlight module, is adjacent to the LCD display panel in a driving manner, and comprises a plurality of direct type mini LED backlight module driving circuits used for driving the direct type mini LED backlight module; and a connector formed on the LCD display panel driver and including a first connector drivingly connected to at least one of the LCD display panels, a second connector drivingly connected to at least one of the sensing devices, and a third connector connected to at least one of the mini LED driving circuits.

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